Subtract 45/7 from 60/15, Solve 4 0/15

Subtract 45/7 from 60/15

1^st number: 4 0/15, 2^nd number: 6 3/7

60/15 - 45/7 is -17/7.

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,
60/15 = 60 × 7/15 × 7 = 420/105
Likewise, for the 2nd fraction, since 7 × 15 = 105,
45/7 = 45 × 15/7 × 15 = 675/105
Subtract the two like fractions:
420/105 - 675/105 = 420 - 675/105 = -255/105
After reducing the fraction, the answer is -17/7

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