Add 7/42 and 90/40, Solve 7/42 + 2 10/40 as a fraction

Add 7/42 and 90/40

1^st number: 7/42, 2^nd number: 2 10/40

7/42 + 90/40 is 29/12.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 42 × 20 = 840,
7/42 = 7 × 20/42 × 20 = 140/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
90/40 = 90 × 21/40 × 21 = 1890/840
Add the two like fractions:
140/840 + 1890/840 = 140 + 1890/840 = 2030/840
2030/840 simplified gives 29/12
So, 7/42 + 90/40 = 29/12
In mixed form: 25/12

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