Subtract 63/70 from 9/24, Solve 9/24

Subtract 63/70 from 9/24

9/24 - 63/70 is -21/40.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 24 × 35 = 840,
9/24 = 9 × 35/24 × 35 = 315/840
Likewise, for the 2nd fraction, since 70 × 12 = 840,
63/70 = 63 × 12/70 × 12 = 756/840
Subtract the two like fractions:
315/840 - 756/840 = 315 - 756/840 = -441/840
After reducing the fraction, the answer is -21/40

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