Add 90/20 and 70/7
1st number: 4 10/20, 2nd number: 10 0/7
90/20 + 70/7 is 29/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
90/20 = 90 × 7/20 × 7 = 630/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
70/7 = 70 × 20/7 × 20 = 1400/140 - Add the two like fractions:
630/140 + 1400/140 = 630 + 1400/140 = 2030/140 - 2030/140 simplified gives 29/2
- So, 90/20 + 70/7 = 29/2
In mixed form: 141/2
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