Subtract 4/7 from 45/72, Solve 45/72

Subtract 4/7 from 45/72

45/72 - 4/7 is 3/56.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504
Likewise, for the 2nd fraction, since 7 × 72 = 504,
4/7 = 4 × 72/7 × 72 = 288/504
Subtract the two like fractions:
315/504 - 288/504 = 315 - 288/504 = 27/504
After reducing the fraction, the answer is 3/56

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