Add 60/5 and 90/21, Solve 12 0/5 + 4 6/21 as a fraction

Add 60/5 and 90/21

1^st number: 12 0/5, 2^nd number: 4 6/21

60/5 + 90/21 is 114/7.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 5 × 21 = 105,
60/5 = 60 × 21/5 × 21 = 1260/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
90/21 = 90 × 5/21 × 5 = 450/105
Add the two like fractions:
1260/105 + 450/105 = 1260 + 450/105 = 1710/105
1710/105 simplified gives 114/7
So, 60/5 + 90/21 = 114/7
In mixed form: 162/7

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