Subtract 15/18 from 70/80, Solve 70/80

Subtract 15/18 from 70/80

70/80 - 15/18 is 1/24.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720
Likewise, for the 2nd fraction, since 18 × 40 = 720,
15/18 = 15 × 40/18 × 40 = 600/720
Subtract the two like fractions:
630/720 - 600/720 = 630 - 600/720 = 30/720
After reducing the fraction, the answer is 1/24

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