Add 21/45 and 70/10
1st number: 21/45, 2nd number: 7 0/10
21/45 + 70/10 is 112/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
70/10 = 70 × 9/10 × 9 = 630/90 - Add the two like fractions:
42/90 + 630/90 = 42 + 630/90 = 672/90 - 672/90 simplified gives 112/15
- So, 21/45 + 70/10 = 112/15
In mixed form: 77/15
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