Subtract 90/30 from 72/35, Solve 2 2/35

Subtract 90/30 from 72/35

1^st number: 2 2/35, 2^nd number: 3 0/30

72/35 - 90/30 is -33/35.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 35 × 6 = 210,
72/35 = 72 × 6/35 × 6 = 432/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
90/30 = 90 × 7/30 × 7 = 630/210
Subtract the two like fractions:
432/210 - 630/210 = 432 - 630/210 = -198/210
After reducing the fraction, the answer is -33/35

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