Subtract 70/45 from 42/7, Solve 6 0/7

Subtract 70/45 from 42/7

1^st number: 6 0/7, 2^nd number: 1 25/45

42/7 - 70/45 is 40/9.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 7 × 45 = 315,
42/7 = 42 × 45/7 × 45 = 1890/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315
Subtract the two like fractions:
1890/315 - 490/315 = 1890 - 490/315 = 1400/315
After reducing the fraction, the answer is 40/9
In mixed form: 44/9

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