Subtract 42/4 from 90/70
1st number: 1 20/70, 2nd number: 10 2/4
90/70 - 42/4 is -129/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
42/4 = 42 × 35/4 × 35 = 1470/140 - Subtract the two like fractions:
180/140 - 1470/140 = 180 - 1470/140 = -1290/140 - After reducing the fraction, the answer is -129/14
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