Add 12/70 and 98/80, Solve 12/70 + 1 18/80 as a fraction

Add 12/70 and 98/80

1^st number: 12/70, 2^nd number: 1 18/80

12/70 + 98/80 is 391/280.

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,
12/70 = 12 × 8/70 × 8 = 96/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
98/80 = 98 × 7/80 × 7 = 686/560
Add the two like fractions:
96/560 + 686/560 = 96 + 686/560 = 782/560
782/560 simplified gives 391/280
So, 12/70 + 98/80 = 391/280
In mixed form: 1111/280

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