Add 20/70 and 90/28
1st number: 20/70, 2nd number: 3 6/28
20/70 + 90/28 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
90/28 = 90 × 5/28 × 5 = 450/140 - Add the two like fractions:
40/140 + 450/140 = 40 + 450/140 = 490/140 - 490/140 simplified gives 7/2
- So, 20/70 + 90/28 = 7/2
In mixed form: 31/2
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