Solutions by everydaycalculation.com

3540 + 4090 is 9572.

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

LCM of 40 and 90 is**360**

Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,

3540 = 35 × 940 × 9 = 315360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,

4090 = 40 × 490 × 4 = 160360 - Add the two like fractions:

315360 + 160360 = 315 + 160360 = 475360 - 475/360 simplified gives 9572
- So, 35/40 + 40/90 = 95/72

In mixed form: 12372

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