Add 63/64 and 42/70, Solve 63/64 + 42/70 as a fraction

Add 63/64 and 42/70

63/64 + 42/70 is 507/320.

Find the least common denominator or LCM of the two denominators:
LCM of 64 and 70 is 2240

Next, find the equivalent fraction of both fractional numbers with denominator 2240
For the 1st fraction, since 64 × 35 = 2240,
63/64 = 63 × 35/64 × 35 = 2205/2240
Likewise, for the 2nd fraction, since 70 × 32 = 2240,
42/70 = 42 × 32/70 × 32 = 1344/2240
Add the two like fractions:
2205/2240 + 1344/2240 = 2205 + 1344/2240 = 3549/2240
3549/2240 simplified gives 507/320
So, 63/64 + 42/70 = 507/320
In mixed form: 1187/320

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