Solutions by everydaycalculation.com

2490 + 4570 is 191210.

- Find the least common denominator or LCM of the two denominators:

LCM of 90 and 70 is**630**

Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,

2490 = 24 × 790 × 7 = 168630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,

4570 = 45 × 970 × 9 = 405630 - Add the two like fractions:

168630 + 405630 = 168 + 405630 = 573630 - 573/630 simplified gives 191210
- So, 24/90 + 45/70 = 191/210

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