Solutions by everydaycalculation.com

1^{st} number: 1 6/15, 2^{nd} number: 3 16/18

2115 - 7018 is -11245.

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

LCM of 15 and 18 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 18 × 5 = 90,

7018 = 70 × 518 × 5 = 35090 - Subtract the two like fractions:

12690 - 35090 = 126 - 35090 = -22490 - After reducing the fraction, the answer is -11245

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:

Android and iPhone/ iPad

Related: ^{42}/_{15}-^{70}/_{18} ^{21}/_{30}-^{70}/_{18} ^{21}/_{15}-^{70}/_{36} ^{63}/_{15}-^{70}/_{18} ^{21}/_{45}-^{70}/_{18} ^{21}/_{15}-^{70}/_{54} ^{21}/_{75}-^{70}/_{18} ^{21}/_{15}-^{70}/_{90}

© everydaycalculation.com