Add 45/90 and 32/21, Solve 45/90 + 1 11/21 as a fraction

Add 45/90 and 32/21

1^st number: 45/90, 2^nd number: 1 11/21

45/90 + 32/21 is 85/42.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630
Likewise, for the 2nd fraction, since 21 × 30 = 630,
32/21 = 32 × 30/21 × 30 = 960/630
Add the two like fractions:
315/630 + 960/630 = 315 + 960/630 = 1275/630
1275/630 simplified gives 85/42
So, 45/90 + 32/21 = 85/42
In mixed form: 21/42

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