Add 45/70 and 42/80
45/70 + 42/80 is 327/280.
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,
45/70 = 45 × 8/70 × 8 = 360/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
42/80 = 42 × 7/80 × 7 = 294/560 - Add the two like fractions:
360/560 + 294/560 = 360 + 294/560 = 654/560 - 654/560 simplified gives 327/280
- So, 45/70 + 42/80 = 327/280
In mixed form: 147/280
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