Add 56/70 and 98/80, Solve 56/70 + 1 18/80 as a fraction

Add 56/70 and 98/80

1^st number: 56/70, 2^nd number: 1 18/80

56/70 + 98/80 is 81/40.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 70 × 8 = 560,
56/70 = 56 × 8/70 × 8 = 448/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
98/80 = 98 × 7/80 × 7 = 686/560
Add the two like fractions:
448/560 + 686/560 = 448 + 686/560 = 1134/560
1134/560 simplified gives 81/40
So, 56/70 + 98/80 = 81/40
In mixed form: 21/40

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