Add 70/75 and 21/18
1st number: 70/75, 2nd number: 1 3/18
70/75 + 21/18 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
70/75 = 70 × 6/75 × 6 = 420/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Add the two like fractions:
420/450 + 525/450 = 420 + 525/450 = 945/450 - 945/450 simplified gives 21/10
- So, 70/75 + 21/18 = 21/10
In mixed form: 21/10
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