Add 90/80 and 10/42, Solve 1 10/80 + 10/42 as a fraction

Add 90/80 and 10/42

1^st number: 1 10/80, 2^nd number: 10/42

90/80 + 10/42 is 229/168.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
90/80 = 90 × 21/80 × 21 = 1890/1680
Likewise, for the 2nd fraction, since 42 × 40 = 1680,
10/42 = 10 × 40/42 × 40 = 400/1680
Add the two like fractions:
1890/1680 + 400/1680 = 1890 + 400/1680 = 2290/1680
2290/1680 simplified gives 229/168
So, 90/80 + 10/42 = 229/168
In mixed form: 161/168

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