Subtract 5/30 from 42/70, Solve 42/70

Subtract 5/30 from 42/70

42/70 - 5/30 is 13/30.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
5/30 = 5 × 7/30 × 7 = 35/210
Subtract the two like fractions:
126/210 - 35/210 = 126 - 35/210 = 91/210
After reducing the fraction, the answer is 13/30

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