Subtract 3/7 from 70/15, Solve 4 10/15

Subtract 3/7 from 70/15

1^st number: 4 10/15, 2^nd number: 3/7

70/15 - 3/7 is 89/21.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
70/15 = 70 × 7/15 × 7 = 490/105
Likewise, for the 2nd fraction, since 7 × 15 = 105,
3/7 = 3 × 15/7 × 15 = 45/105
Subtract the two like fractions:
490/105 - 45/105 = 490 - 45/105 = 445/105
After reducing the fraction, the answer is 89/21
In mixed form: 45/21

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