Subtract 54/84 from 70/45, Solve 1 25/45

Subtract 54/84 from 70/45

1^st number: 1 25/45, 2^nd number: 54/84

70/45 - 54/84 is 115/126.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 45 × 28 = 1260,
70/45 = 70 × 28/45 × 28 = 1960/1260
Likewise, for the 2nd fraction, since 84 × 15 = 1260,
54/84 = 54 × 15/84 × 15 = 810/1260
Subtract the two like fractions:
1960/1260 - 810/1260 = 1960 - 810/1260 = 1150/1260
After reducing the fraction, the answer is 115/126

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