Subtract 39/84 and 18/20

39
84
-
18
20
=
-61
140

What is 39/84 - 18/20

39
84
-
18
20
=

In order to make fractions have the same denominator, multiply the numerator and denominator of each fraction by the denominator of the other

39 x 20
84 x 20
-
18 x 84
20 x 84
=
780
1680
-
1512
1680
=
780 - 1512
1680
=
-732
1680

OR

(39 x 20) - (18 x 84)
84 x 20
=
-732
1680

Simplify the fraction

Divide each part of the fraction with the greatest common factor to simplify the fraction

-732
1680
=
-732 ÷ 12
1680 ÷ 12
=
-
61
140

Fraction Calculator

📌 Negative signs in fractions

Positive Fractions

-1
-2
=
-
1
-2
=
-
-1
2
=
1
2

Negative Fractions

-1
2
=
1
-2
=
-
-1
-2
=
-
1
2