Add 18/7 and 42/40, Solve 2 4/7 + 1 2/40 as a fraction

Add 18/7 and 42/40

1^st number: 2 4/7, 2^nd number: 1 2/40

18/7 + 42/40 is 507/140.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 7 × 40 = 280,
18/7 = 18 × 40/7 × 40 = 720/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280
Add the two like fractions:
720/280 + 294/280 = 720 + 294/280 = 1014/280
1014/280 simplified gives 507/140
So, 18/7 + 42/40 = 507/140
In mixed form: 387/140

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