Subtract 84/45 from 40/70
1st number: 40/70, 2nd number: 1 39/45
40/70 - 84/45 is -136/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
84/45 = 84 × 14/45 × 14 = 1176/630 - Subtract the two like fractions:
360/630 - 1176/630 = 360 - 1176/630 = -816/630 - After reducing the fraction, the answer is -136/105
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