Add 21/70 and 12/60
21/70 + 12/60 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
12/60 = 12 × 7/60 × 7 = 84/420 - Add the two like fractions:
126/420 + 84/420 = 126 + 84/420 = 210/420 - 210/420 simplified gives 1/2
- So, 21/70 + 12/60 = 1/2
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