Subtract 30/45 from 7/98, Solve 7/98

Subtract 30/45 from 7/98

7/98 - 30/45 is -25/42.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 45 is 4410

Next, find the equivalent fraction of both fractional numbers with denominator 4410
For the 1st fraction, since 98 × 45 = 4410,
7/98 = 7 × 45/98 × 45 = 315/4410
Likewise, for the 2nd fraction, since 45 × 98 = 4410,
30/45 = 30 × 98/45 × 98 = 2940/4410
Subtract the two like fractions:
315/4410 - 2940/4410 = 315 - 2940/4410 = -2625/4410
After reducing the fraction, the answer is -25/42

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