Add 90/70 and 90/28
1st number: 1 20/70, 2nd number: 3 6/28
90/70 + 90/28 is 9/2.
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,
90/70 = 90 × 2/70 × 2 = 180/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
90/28 = 90 × 5/28 × 5 = 450/140 - Add the two like fractions:
180/140 + 450/140 = 180 + 450/140 = 630/140 - 630/140 simplified gives 9/2
- So, 90/70 + 90/28 = 9/2
In mixed form: 41/2
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