Subtract 42/90 from 49/14, Solve 3 7/14

Subtract 42/90 from 49/14

1^st number: 3 7/14, 2^nd number: 42/90

49/14 - 42/90 is 91/30.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
49/14 = 49 × 45/14 × 45 = 2205/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
42/90 = 42 × 7/90 × 7 = 294/630
Subtract the two like fractions:
2205/630 - 294/630 = 2205 - 294/630 = 1911/630
After reducing the fraction, the answer is 91/30
In mixed form: 31/30

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