Add 21/72 and 60/70
21/72 + 60/70 is 193/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
21/72 = 21 × 35/72 × 35 = 735/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
60/70 = 60 × 36/70 × 36 = 2160/2520 - Add the two like fractions:
735/2520 + 2160/2520 = 735 + 2160/2520 = 2895/2520 - 2895/2520 simplified gives 193/168
- So, 21/72 + 60/70 = 193/168
In mixed form: 125/168
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