Add 4/80 and 21/70
4/80 + 21/70 is 7/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
4/80 = 4 × 7/80 × 7 = 28/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
21/70 = 21 × 8/70 × 8 = 168/560 - Add the two like fractions:
28/560 + 168/560 = 28 + 168/560 = 196/560 - 196/560 simplified gives 7/20
- So, 4/80 + 21/70 = 7/20
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