Subtract 70/45 from 18/49, Solve 18/49

Subtract 70/45 from 18/49

1^st number: 18/49, 2^nd number: 1 25/45

18/49 - 70/45 is -524/441.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 45 is 2205

Next, find the equivalent fraction of both fractional numbers with denominator 2205
For the 1st fraction, since 49 × 45 = 2205,
18/49 = 18 × 45/49 × 45 = 810/2205
Likewise, for the 2nd fraction, since 45 × 49 = 2205,
70/45 = 70 × 49/45 × 49 = 3430/2205
Subtract the two like fractions:
810/2205 - 3430/2205 = 810 - 3430/2205 = -2620/2205
After reducing the fraction, the answer is -524/441

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