What is 2/9 plus 7/11?
2/9 plus 7/11 equals 85/99 (or 0.858586 in decimal form). Learn the step-by-step solution to add 2/9 and 7/11 using Least Common Denominator and simplification.
Exact Answer
2/9 + 7/11 = 85/99
Simplified Fraction
85/99
Mixed Number
Proper (85/99)
Decimal Value
0.858586
Percentage
85.8586%
Step-by-Step Solution: 2/9 + 7/11
Step 1
Find the Least Common Denominator (LCD)
The denominators 9 and 11 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 9 × 11 = 99.
LCD(9, 11) = 99
Step 2
Convert to Equivalent Fractions with Common Denominator 99
Multiply the numerator and denominator of 2/9 by 11, and multiply the numerator and denominator of 7/11 by 9 so both fractions share the common base 99.
2 × 11/9 × 11 = 22/99 and 7 × 9/11 × 9 = 63/99
Step 3
Add the Numerators
Now add the numerators (22 + 63 = 85) and keep the common denominator 99 unchanged.
22 + 63/99 = 85/99
Step 4
Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 85 and 99 is 1, confirming that 85/99 cannot be reduced further—it is already in its simplest irreducible form.
85/99
Step 5
Decimal & Percentage Representation
Dividing the numerator 85 by denominator 99 produces a repeating decimal (approximately 0.858586, or 85.8586%).
85 ÷ 99 = 0.858586 (85.8586%)
Visual Representation
The diagram below illustrates 2/9 plus 7/11 visually:
+
=
Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| Lowest Terms Fraction | 85/99 |
| Mixed Number Form | 85/99 |
| Decimal Form | 0.858586 |
| Percentage | 85.8586% |
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Frequently Asked Questions
What is 2/9 plus 7/11 as a fraction?
2/9 + 7/11 in simplest fraction form is 85/99.
What is 2/9 plus 7/11 as a decimal?
2/9 + 7/11 converted to a decimal is 0.858586.
What is 2/9 plus 7/11 as a percentage?
2/9 + 7/11 expressed as a percentage is 85.8586%.
Does 2/9 plus 7/11 result in a terminating or repeating decimal?
It results in a repeating decimal (approximately 0.858586...) because the denominator contains prime factors other than 2 and 5.