Subtract 15/90 from 90/42, Solve 2 6/42

Subtract 15/90 from 90/42

1^st number: 2 6/42, 2^nd number: 15/90

90/42 - 15/90 is 83/42.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
90/42 = 90 × 15/42 × 15 = 1350/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630
Subtract the two like fractions:
1350/630 - 105/630 = 1350 - 105/630 = 1245/630
After reducing the fraction, the answer is 83/42
In mixed form: 141/42

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