Add 18/70 and 90/42
1st number: 18/70, 2nd number: 2 6/42
18/70 + 90/42 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
18/70 = 18 × 3/70 × 3 = 54/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Add the two like fractions:
54/210 + 450/210 = 54 + 450/210 = 504/210 - 504/210 simplified gives 12/5
- So, 18/70 + 90/42 = 12/5
In mixed form: 22/5
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