Add 18/42 and 49/70
18/42 + 49/70 is 79/70.
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,
18/42 = 18 × 5/42 × 5 = 90/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
49/70 = 49 × 3/70 × 3 = 147/210 - Add the two like fractions:
90/210 + 147/210 = 90 + 147/210 = 237/210 - 237/210 simplified gives 79/70
- So, 18/42 + 49/70 = 79/70
In mixed form: 19/70
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