Add 21/70 and 90/48
1st number: 21/70, 2nd number: 1 42/48
21/70 + 90/48 is 87/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
21/70 = 21 × 24/70 × 24 = 504/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
90/48 = 90 × 35/48 × 35 = 3150/1680 - Add the two like fractions:
504/1680 + 3150/1680 = 504 + 3150/1680 = 3654/1680 - 3654/1680 simplified gives 87/40
- So, 21/70 + 90/48 = 87/40
In mixed form: 27/40
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