Add 21/25 and 90/42, Solve 21/25 + 2 6/42 as a fraction

Add 21/25 and 90/42

1^st number: 21/25, 2^nd number: 2 6/42

21/25 + 90/42 is 522/175.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 25 × 42 = 1050,
21/25 = 21 × 42/25 × 42 = 882/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
90/42 = 90 × 25/42 × 25 = 2250/1050
Add the two like fractions:
882/1050 + 2250/1050 = 882 + 2250/1050 = 3132/1050
3132/1050 simplified gives 522/175
So, 21/25 + 90/42 = 522/175
In mixed form: 2172/175

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