Subtract 90/70 from 45/48
1st number: 45/48, 2nd number: 1 20/70
45/48 - 90/70 is -39/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 70 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 48 × 35 = 1680,
45/48 = 45 × 35/48 × 35 = 1575/1680 - Likewise, for the 2nd fraction, since 70 × 24 = 1680,
90/70 = 90 × 24/70 × 24 = 2160/1680 - Subtract the two like fractions:
1575/1680 - 2160/1680 = 1575 - 2160/1680 = -585/1680 - After reducing the fraction, the answer is -39/112
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