Add 18/42 and 45/70
18/42 + 45/70 is 15/14.
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,
45/70 = 45 × 3/70 × 3 = 135/210 - Add the two like fractions:
90/210 + 135/210 = 90 + 135/210 = 225/210 - 225/210 simplified gives 15/14
- So, 18/42 + 45/70 = 15/14
In mixed form: 11/14
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