Add 90/20 and 70/35
1st number: 4 10/20, 2nd number: 2 0/35
90/20 + 70/35 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 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 35 × 4 = 140,
70/35 = 70 × 4/35 × 4 = 280/140 - Add the two like fractions:
630/140 + 280/140 = 630 + 280/140 = 910/140 - 910/140 simplified gives 13/2
- So, 90/20 + 70/35 = 13/2
In mixed form: 61/2
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