Subtract 7/80 from 21/45
2145 - 780 is 91240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
2145 = 21 × 1645 × 16 = 336720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
780 = 7 × 980 × 9 = 63720 - Subtract the two like fractions:
336720 - 63720 = 336 - 63720 = 273720 - After reducing the fraction, the answer is 91240
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