Subtract 98/80 from 42/35, Solve 1 7/35

Subtract 98/80 from 42/35

1^st number: 1 7/35, 2^nd number: 1 18/80

42/35 - 98/80 is -1/40.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 35 × 16 = 560,
42/35 = 42 × 16/35 × 16 = 672/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
98/80 = 98 × 7/80 × 7 = 686/560
Subtract the two like fractions:
672/560 - 686/560 = 672 - 686/560 = -14/560
After reducing the fraction, the answer is -1/40

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