Subtract 25/30 from 18/70
18/70 - 25/30 is -121/210.
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,
18/70 = 18 × 3/70 × 3 = 54/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
25/30 = 25 × 7/30 × 7 = 175/210 - Subtract the two like fractions:
54/210 - 175/210 = 54 - 175/210 = -121/210
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