Subtract 90/30 from 60/70
1st number: 60/70, 2nd number: 3 0/30
60/70 - 90/30 is -15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
60/70 = 60 × 3/70 × 3 = 180/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
90/30 = 90 × 7/30 × 7 = 630/210 - Subtract the two like fractions:
180/210 - 630/210 = 180 - 630/210 = -450/210 - After reducing the fraction, the answer is -15/7
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Related: 60/70-90/60