Add 18/30 and 21/70
18/30 + 21/70 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
18/30 = 18 × 7/30 × 7 = 126/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Add the two like fractions:
126/210 + 63/210 = 126 + 63/210 = 189/210 - 189/210 simplified gives 9/10
- So, 18/30 + 21/70 = 9/10
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