Add 80/60 and 90/72, Solve 1 20/60 + 1 18/72 as a fraction

Add 80/60 and 90/72

1^st number: 1 20/60, 2^nd number: 1 18/72

80/60 + 90/72 is 31/12.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 72 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 60 × 6 = 360,
80/60 = 80 × 6/60 × 6 = 480/360
Likewise, for the 2nd fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360
Add the two like fractions:
480/360 + 450/360 = 480 + 450/360 = 930/360
930/360 simplified gives 31/12
So, 80/60 + 90/72 = 31/12
In mixed form: 27/12

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