Add 7/42 and 45/70
7/42 + 45/70 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
45/70 = 45 × 3/70 × 3 = 135/210 - Add the two like fractions:
35/210 + 135/210 = 35 + 135/210 = 170/210 - 170/210 simplified gives 17/21
- So, 7/42 + 45/70 = 17/21
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