Add 90/48 and 21/15
1st number: 1 42/48, 2nd number: 1 6/15
90/48 + 21/15 is 131/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
90/48 = 90 × 5/48 × 5 = 450/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
21/15 = 21 × 16/15 × 16 = 336/240 - Add the two like fractions:
450/240 + 336/240 = 450 + 336/240 = 786/240 - 786/240 simplified gives 131/40
- So, 90/48 + 21/15 = 131/40
In mixed form: 311/40
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