Add 80/70 and 90/42
1st number: 1 10/70, 2nd number: 2 6/42
80/70 + 90/42 is 23/7.
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,
80/70 = 80 × 3/70 × 3 = 240/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Add the two like fractions:
240/210 + 450/210 = 240 + 450/210 = 690/210 - 690/210 simplified gives 23/7
- So, 80/70 + 90/42 = 23/7
In mixed form: 32/7
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