Add 42/70 and 4/80
42/70 + 4/80 is 13/20.
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,
42/70 = 42 × 8/70 × 8 = 336/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
4/80 = 4 × 7/80 × 7 = 28/560 - Add the two like fractions:
336/560 + 28/560 = 336 + 28/560 = 364/560 - 364/560 simplified gives 13/20
- So, 42/70 + 4/80 = 13/20
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