Subtract 10/42 from 90/35, Solve 2 20/35

Subtract 10/42 from 90/35

1^st number: 2 20/35, 2^nd number: 10/42

90/35 - 10/42 is 7/3.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 35 × 6 = 210,
90/35 = 90 × 6/35 × 6 = 540/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
10/42 = 10 × 5/42 × 5 = 50/210
Subtract the two like fractions:
540/210 - 50/210 = 540 - 50/210 = 490/210
After reducing the fraction, the answer is 7/3
In mixed form: 21/3

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