Add 90/70 and 21/56
1st number: 1 20/70, 2nd number: 21/56
90/70 + 21/56 is 93/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
90/70 = 90 × 4/70 × 4 = 360/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Add the two like fractions:
360/280 + 105/280 = 360 + 105/280 = 465/280 - 465/280 simplified gives 93/56
- So, 90/70 + 21/56 = 93/56
In mixed form: 137/56
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