Add 49/70 and 30/80
49/70 + 30/80 is 43/40.
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,
49/70 = 49 × 8/70 × 8 = 392/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Add the two like fractions:
392/560 + 210/560 = 392 + 210/560 = 602/560 - 602/560 simplified gives 43/40
- So, 49/70 + 30/80 = 43/40
In mixed form: 13/40
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