Subtract 54/90 from 2/8
2/8 - 54/90 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
2/8 = 2 × 45/8 × 45 = 90/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
54/90 = 54 × 4/90 × 4 = 216/360 - Subtract the two like fractions:
90/360 - 216/360 = 90 - 216/360 = -126/360 - After reducing the fraction, the answer is -7/20
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