Add 72/21 and 45/49
1st number: 3 9/21, 2nd number: 45/49
72/21 + 45/49 is 213/49.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 21 × 7 = 147,
72/21 = 72 × 7/21 × 7 = 504/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
45/49 = 45 × 3/49 × 3 = 135/147 - Add the two like fractions:
504/147 + 135/147 = 504 + 135/147 = 639/147 - 639/147 simplified gives 213/49
- So, 72/21 + 45/49 = 213/49
In mixed form: 417/49
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