Add 40/63 and 64/70, Solve 40/63 + 64/70 as a fraction

Add 40/63 and 64/70

40/63 + 64/70 is 488/315.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
40/63 = 40 × 10/63 × 10 = 400/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
64/70 = 64 × 9/70 × 9 = 576/630
Add the two like fractions:
400/630 + 576/630 = 400 + 576/630 = 976/630
976/630 simplified gives 488/315
So, 40/63 + 64/70 = 488/315
In mixed form: 1173/315

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