Add 42/48 and 63/90
42/48 + 63/90 is 63/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
42/48 = 42 × 15/48 × 15 = 630/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
63/90 = 63 × 8/90 × 8 = 504/720 - Add the two like fractions:
630/720 + 504/720 = 630 + 504/720 = 1134/720 - 1134/720 simplified gives 63/40
- So, 42/48 + 63/90 = 63/40
In mixed form: 123/40
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