Add 21/70 and 18/32
21/70 + 18/32 is 69/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
21/70 = 21 × 16/70 × 16 = 336/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
18/32 = 18 × 35/32 × 35 = 630/1120 - Add the two like fractions:
336/1120 + 630/1120 = 336 + 630/1120 = 966/1120 - 966/1120 simplified gives 69/80
- So, 21/70 + 18/32 = 69/80
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