Add 9/30 and 42/40, Solve 9/30 + 1 2/40 as a fraction

Add 9/30 and 42/40

1^st number: 9/30, 2^nd number: 1 2/40

9/30 + 42/40 is 27/20.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 30 × 4 = 120,
9/30 = 9 × 4/30 × 4 = 36/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120
Add the two like fractions:
36/120 + 126/120 = 36 + 126/120 = 162/120
162/120 simplified gives 27/20
So, 9/30 + 42/40 = 27/20
In mixed form: 17/20

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