Add 80/45 and 45/21, Solve 1 35/45 + 2 3/21 as a fraction

Add 80/45 and 45/21

1^st number: 1 35/45, 2^nd number: 2 3/21

80/45 + 45/21 is 247/63.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
80/45 = 80 × 7/45 × 7 = 560/315
Likewise, for the 2nd fraction, since 21 × 15 = 315,
45/21 = 45 × 15/21 × 15 = 675/315
Add the two like fractions:
560/315 + 675/315 = 560 + 675/315 = 1235/315
1235/315 simplified gives 247/63
So, 80/45 + 45/21 = 247/63
In mixed form: 358/63

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