Add 75/18 and 70/21
1st number: 4 3/18, 2nd number: 3 7/21
75/18 + 70/21 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
75/18 = 75 × 7/18 × 7 = 525/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
70/21 = 70 × 6/21 × 6 = 420/126 - Add the two like fractions:
525/126 + 420/126 = 525 + 420/126 = 945/126 - 945/126 simplified gives 15/2
- So, 75/18 + 70/21 = 15/2
In mixed form: 71/2
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