Subtract 63/49 from 54/70, Solve 54/70

Subtract 63/49 from 54/70

1^st number: 54/70, 2^nd number: 1 14/49

54/70 - 63/49 is -18/35.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 70 × 7 = 490,
54/70 = 54 × 7/70 × 7 = 378/490
Likewise, for the 2nd fraction, since 49 × 10 = 490,
63/49 = 63 × 10/49 × 10 = 630/490
Subtract the two like fractions:
378/490 - 630/490 = 378 - 630/490 = -252/490
After reducing the fraction, the answer is -18/35

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