Add 98/70 and 21/30, Solve 1 28/70 + 21/30 as a fraction

Add 98/70 and 21/30

1^st number: 1 28/70, 2^nd number: 21/30

98/70 + 21/30 is 21/10.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
98/70 = 98 × 3/70 × 3 = 294/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210
Add the two like fractions:
294/210 + 147/210 = 294 + 147/210 = 441/210
441/210 simplified gives 21/10
So, 98/70 + 21/30 = 21/10
In mixed form: 21/10

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