Add 48/54 and 4/21
48/54 + 4/21 is 68/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
48/54 = 48 × 7/54 × 7 = 336/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
4/21 = 4 × 18/21 × 18 = 72/378 - Add the two like fractions:
336/378 + 72/378 = 336 + 72/378 = 408/378 - 408/378 simplified gives 68/63
- So, 48/54 + 4/21 = 68/63
In mixed form: 15/63
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