Add 81/10 and 70/42, Solve 8 1/10 + 1 28/42 as a fraction

Add 81/10 and 70/42

1^st number: 8 1/10, 2^nd number: 1 28/42

81/10 + 70/42 is 293/30.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
81/10 = 81 × 21/10 × 21 = 1701/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210
Add the two like fractions:
1701/210 + 350/210 = 1701 + 350/210 = 2051/210
2051/210 simplified gives 293/30
So, 81/10 + 70/42 = 293/30
In mixed form: 923/30

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