Add 21/64 and 60/70
21/64 + 60/70 is 531/448.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 70 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 64 × 35 = 2240,
21/64 = 21 × 35/64 × 35 = 735/2240 - Likewise, for the 2nd fraction, since 70 × 32 = 2240,
60/70 = 60 × 32/70 × 32 = 1920/2240 - Add the two like fractions:
735/2240 + 1920/2240 = 735 + 1920/2240 = 2655/2240 - 2655/2240 simplified gives 531/448
- So, 21/64 + 60/70 = 531/448
In mixed form: 183/448
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