Add 21/70 and 45/48
21/70 + 45/48 is 99/80.
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,
45/48 = 45 × 35/48 × 35 = 1575/1680 - Add the two like fractions:
504/1680 + 1575/1680 = 504 + 1575/1680 = 2079/1680 - 2079/1680 simplified gives 99/80
- So, 21/70 + 45/48 = 99/80
In mixed form: 119/80
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