Add 15/18 and 75/70, Solve 15/18 + 1 5/70 as a fraction

Add 15/18 and 75/70

1^st number: 15/18, 2^nd number: 1 5/70

15/18 + 75/70 is 40/21.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 18 × 35 = 630,
15/18 = 15 × 35/18 × 35 = 525/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
75/70 = 75 × 9/70 × 9 = 675/630
Add the two like fractions:
525/630 + 675/630 = 525 + 675/630 = 1200/630
1200/630 simplified gives 40/21
So, 15/18 + 75/70 = 40/21
In mixed form: 119/21

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