Subtract 70/45 from 90/7
1st number: 12 6/7, 2nd number: 1 25/45
90/7 - 70/45 is 712/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
90/7 = 90 × 45/7 × 45 = 4050/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315 - Subtract the two like fractions:
4050/315 - 490/315 = 4050 - 490/315 = 3560/315 - After reducing the fraction, the answer is 712/63
- In mixed form: 1119/63
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