Add 72/21 and 90/48
1st number: 3 9/21, 2nd number: 1 42/48
72/21 + 90/48 is 297/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
72/21 = 72 × 16/21 × 16 = 1152/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
90/48 = 90 × 7/48 × 7 = 630/336 - Add the two like fractions:
1152/336 + 630/336 = 1152 + 630/336 = 1782/336 - 1782/336 simplified gives 297/56
- So, 72/21 + 90/48 = 297/56
In mixed form: 517/56
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