Solutions by everydaycalculation.com

1^{st} number: 1 6/15, 2^{nd} number: 35/90

2115 - 3590 is 9190.

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

LCM of 15 and 90 is**90**

Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,

2115 = 21 × 615 × 6 = 12690 - Likewise, for the 2nd fraction, since 90 × 1 = 90,

3590 = 35 × 190 × 1 = 3590 - Subtract the two like fractions:

12690 - 3590 = 126 - 3590 = 9190 - In mixed form: 1190

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