Add 36/5 and 42/10, Solve 7 1/5 + 4 2/10 as a fraction

Add 36/5 and 42/10

1^st number: 7 1/5, 2^nd number: 4 2/10

36/5 + 42/10 is 57/5.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10

Next, find the equivalent fraction of both fractional numbers with denominator 10
For the 1st fraction, since 5 × 2 = 10,
36/5 = 36 × 2/5 × 2 = 72/10
Likewise, for the 2nd fraction, since 10 × 1 = 10,
42/10 = 42 × 1/10 × 1 = 42/10
Add the two like fractions:
72/10 + 42/10 = 72 + 42/10 = 114/10
114/10 simplified gives 57/5
So, 36/5 + 42/10 = 57/5
In mixed form: 112/5

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