Add 21/70 and 15/64
21/70 + 15/64 is 171/320.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 64 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 70 × 32 = 2240,
21/70 = 21 × 32/70 × 32 = 672/2240 - Likewise, for the 2nd fraction, since 64 × 35 = 2240,
15/64 = 15 × 35/64 × 35 = 525/2240 - Add the two like fractions:
672/2240 + 525/2240 = 672 + 525/2240 = 1197/2240 - 1197/2240 simplified gives 171/320
- So, 21/70 + 15/64 = 171/320
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