What is 8/9 plus 8/9? (Answer: 16/9)

Exact Answer

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Problem: What is 8/9 plus 8/9?
Formula / Expression: 8/9 + 8/9
Final Answer: 1 7/9 (16/9)
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Step-by-Step Solution:

Step 1: Check the Denominators (Like Fractions)
Both fractions already share the identical denominator (9). Because these are like fractions, no conversion to a common denominator is required—we directly add their numerators while keeping the denominator 9.
Working: 8/9 + 8/9

Step 2: Add the Numerators
Now add the numerators (8 + 8 = 16) and keep the common denominator 9 unchanged.
Working: 8 + 8/9 = 16/9

Step 3: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 16 and 9 is 1, confirming that 16/9 cannot be reduced further—it is already in its simplest irreducible form.
Working: 16/9

Step 4: Convert Improper Fraction to a Mixed Number
Since the numerator (16) is greater than the denominator (9), divide 16 by 9: it goes in 1 whole time(s) with a remainder of 7, giving the mixed number 1 7/9.
Working: 16/9 = 1 7/9

Step 5: Decimal & Percentage Representation
Dividing the numerator 16 by denominator 9 produces a repeating decimal (approximately 1.777778, or 177.7778%).
Working: 16 ÷ 9 = 1.777778 (177.7778%)

Key Values:
- Simplified Fraction: 16/9
- Mixed Number Form: 1 7/9
- Decimal Value: 1.777778
- Percentage: 177.7778%

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Solved with FractionsCalc:
https://fractionscalc.com/what-is-8-9-plus-8-9/
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8/9 + 8/9 = 16/9

Simplified Fraction

16/9

Mixed Number

1 7/9

Decimal Value

1.777778

Percentage

177.7778%

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Step-by-Step Solution: 8/9 + 8/9

Step 1

Check the Denominators (Like Fractions)

Both fractions already share the identical denominator (9). Because these are like fractions, no conversion to a common denominator is required—we directly add their numerators while keeping the denominator 9.

8/9 + 8/9

Step 2

Add the Numerators

Now add the numerators (8 + 8 = 16) and keep the common denominator 9 unchanged.

8 + 8/9 = 16/9

Step 3

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 16 and 9 is 1, confirming that 16/9 cannot be reduced further—it is already in its simplest irreducible form.

16/9

Step 4

Convert Improper Fraction to a Mixed Number

Since the numerator (16) is greater than the denominator (9), divide 16 by 9: it goes in 1 whole time(s) with a remainder of 7, giving the mixed number 1 7/9.

16/9 = 17/9

Step 5

Decimal & Percentage Representation

Dividing the numerator 16 by denominator 9 produces a repeating decimal (approximately 1.777778, or 177.7778%).

16 ÷ 9 = 1.777778 (177.7778%)

Visual Representation

The diagram below illustrates 8/9 plus 8/9 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`16/9`
Mixed Number Form	`1 7/9`
Decimal Form	`1.777778`
Percentage	`177.7778%`

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Frequently Asked Questions

What is 8/9 plus 8/9 as a fraction?

8/9 + 8/9 in simplest fraction form is 16/9 (or 1 7/9 as a mixed number).

What is 8/9 plus 8/9 as a decimal?

8/9 + 8/9 converted to a decimal is 1.777778.

What is 8/9 plus 8/9 as a percentage?

8/9 + 8/9 expressed as a percentage is 177.7778%.

How do you write 8/9 plus 8/9 as a mixed number?

Because the numerator is greater than the denominator, the improper fraction 16/9 can be written as the mixed number 1 7/9.

Does 8/9 plus 8/9 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 1.777778...) because the denominator contains prime factors other than 2 and 5.