Add 30/40 and 80/60, Solve 30/40 + 1 20/60 as a fraction

Add 30/40 and 80/60

1^st number: 30/40, 2^nd number: 1 20/60

30/40 + 80/60 is 25/12.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
30/40 = 30 × 3/40 × 3 = 90/120
Likewise, for the 2nd fraction, since 60 × 2 = 120,
80/60 = 80 × 2/60 × 2 = 160/120
Add the two like fractions:
90/120 + 160/120 = 90 + 160/120 = 250/120
250/120 simplified gives 25/12
So, 30/40 + 80/60 = 25/12
In mixed form: 21/12

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