Add 40/70 and 28/80
40/70 + 28/80 is 129/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
40/70 = 40 × 8/70 × 8 = 320/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
28/80 = 28 × 7/80 × 7 = 196/560 - Add the two like fractions:
320/560 + 196/560 = 320 + 196/560 = 516/560 - 516/560 simplified gives 129/140
- So, 40/70 + 28/80 = 129/140
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