Add 21/35 and 45/80
21/35 + 45/80 is 93/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 35 × 16 = 560,
21/35 = 21 × 16/35 × 16 = 336/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560 - Add the two like fractions:
336/560 + 315/560 = 336 + 315/560 = 651/560 - 651/560 simplified gives 93/80
- So, 21/35 + 45/80 = 93/80
In mixed form: 113/80
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