Add 12/45 and 90/42, Solve 12/45 + 2 6/42 as a fraction

Add 12/45 and 90/42

1^st number: 12/45, 2^nd number: 2 6/42

12/45 + 90/42 is 253/105.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
12/45 = 12 × 14/45 × 14 = 168/630
Likewise, for the 2nd fraction, since 42 × 15 = 630,
90/42 = 90 × 15/42 × 15 = 1350/630
Add the two like fractions:
168/630 + 1350/630 = 168 + 1350/630 = 1518/630
1518/630 simplified gives 253/105
So, 12/45 + 90/42 = 253/105
In mixed form: 243/105

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