Subtract 98/7 from 70/30, Solve 2 10/30

Subtract 98/7 from 70/30

1^st number: 2 10/30, 2^nd number: 14 0/7

70/30 - 98/7 is -35/3.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
70/30 = 70 × 7/30 × 7 = 490/210
Likewise, for the 2nd fraction, since 7 × 30 = 210,
98/7 = 98 × 30/7 × 30 = 2940/210
Subtract the two like fractions:
490/210 - 2940/210 = 490 - 2940/210 = -2450/210
After reducing the fraction, the answer is -35/3

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