Add 21/70 and 10/30
21/70 + 10/30 is 19/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
10/30 = 10 × 7/30 × 7 = 70/210 - Add the two like fractions:
63/210 + 70/210 = 63 + 70/210 = 133/210 - 133/210 simplified gives 19/30
- So, 21/70 + 10/30 = 19/30
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