Add 21/4 and 90/70
1st number: 5 1/4, 2nd number: 1 20/70
21/4 + 90/70 is 183/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
21/4 = 21 × 35/4 × 35 = 735/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Add the two like fractions:
735/140 + 180/140 = 735 + 180/140 = 915/140 - 915/140 simplified gives 183/28
- So, 21/4 + 90/70 = 183/28
In mixed form: 615/28
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