Add 45/80 and 42/70
45/80 + 42/70 is 93/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
42/70 = 42 × 8/70 × 8 = 336/560 - Add the two like fractions:
315/560 + 336/560 = 315 + 336/560 = 651/560 - 651/560 simplified gives 93/80
- So, 45/80 + 42/70 = 93/80
In mixed form: 113/80
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