Subtract 1/30 from 90/70
1st number: 1 20/70, 2nd number: 1/30
90/70 - 1/30 is 263/210.
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,
90/70 = 90 × 3/70 × 3 = 270/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
1/30 = 1 × 7/30 × 7 = 7/210 - Subtract the two like fractions:
270/210 - 7/210 = 270 - 7/210 = 263/210 - In mixed form: 153/210
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