Add 42/12 and 90/25, Solve 3 6/12 + 3 15/25 as a fraction

Add 42/12 and 90/25

1^st number: 3 6/12, 2^nd number: 3 15/25

42/12 + 90/25 is 71/10.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 12 × 25 = 300,
42/12 = 42 × 25/12 × 25 = 1050/300
Likewise, for the 2nd fraction, since 25 × 12 = 300,
90/25 = 90 × 12/25 × 12 = 1080/300
Add the two like fractions:
1050/300 + 1080/300 = 1050 + 1080/300 = 2130/300
2130/300 simplified gives 71/10
So, 42/12 + 90/25 = 71/10
In mixed form: 71/10

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