Add 21/72 and 90/35
1st number: 21/72, 2nd number: 2 20/35
21/72 + 90/35 is 481/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 35 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
21/72 = 21 × 35/72 × 35 = 735/2520 - Likewise, for the 2nd fraction, since 35 × 72 = 2520,
90/35 = 90 × 72/35 × 72 = 6480/2520 - Add the two like fractions:
735/2520 + 6480/2520 = 735 + 6480/2520 = 7215/2520 - 7215/2520 simplified gives 481/168
- So, 21/72 + 90/35 = 481/168
In mixed form: 2145/168
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