Add 21/30 and 98/70
1st number: 21/30, 2nd number: 1 28/70
21/30 + 98/70 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
98/70 = 98 × 3/70 × 3 = 294/210 - Add the two like fractions:
147/210 + 294/210 = 147 + 294/210 = 441/210 - 441/210 simplified gives 21/10
- So, 21/30 + 98/70 = 21/10
In mixed form: 21/10
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