Add 12/70 and 42/80
12/70 + 42/80 is 39/56.
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,
12/70 = 12 × 8/70 × 8 = 96/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
42/80 = 42 × 7/80 × 7 = 294/560 - Add the two like fractions:
96/560 + 294/560 = 96 + 294/560 = 390/560 - 390/560 simplified gives 39/56
- So, 12/70 + 42/80 = 39/56
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