Subtract 7/16 from 98/70, Solve 1 28/70

Subtract 7/16 from 98/70

1^st number: 1 28/70, 2^nd number: 7/16

98/70 - 7/16 is 77/80.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 70 × 8 = 560,
98/70 = 98 × 8/70 × 8 = 784/560
Likewise, for the 2nd fraction, since 16 × 35 = 560,
7/16 = 7 × 35/16 × 35 = 245/560
Subtract the two like fractions:
784/560 - 245/560 = 784 - 245/560 = 539/560
After reducing the fraction, the answer is 77/80

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad