Subtract 4/49 from 40/42
40/42 - 4/49 is 128/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
40/42 = 40 × 7/42 × 7 = 280/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
4/49 = 4 × 6/49 × 6 = 24/294 - Subtract the two like fractions:
280/294 - 24/294 = 280 - 24/294 = 256/294 - After reducing the fraction, the answer is 128/147
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