Basic Math Examples

$(8 m^{5} - 24 m^{4} + 20 m^{3} - 9 m^{2} - m + 15) \div 2 m - 3$

Step 1

Rewrite the division as a fraction.

$\frac{8 m^{5} - 24 m^{4} + 20 m^{3} - 9 m^{2} - m + 15}{2 m} - 3$

Step 2

To write $- 3$ as a fraction with a common denominator, multiply by $\frac{2 m}{2 m}$ .

$\frac{8 m^{5} - 24 m^{4} + 20 m^{3} - 9 m^{2} - m + 15}{2 m} - 3 \cdot \frac{2 m}{2 m}$

Step 3

Simplify terms.

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Step 3.1

Combine $- 3$ and $\frac{2 m}{2 m}$ .

$\frac{8 m^{5} - 24 m^{4} + 20 m^{3} - 9 m^{2} - m + 15}{2 m} + \frac{- 3 (2 m)}{2 m}$

Step 3.2

Combine the numerators over the common denominator.

$\frac{8 m^{5} - 24 m^{4} + 20 m^{3} - 9 m^{2} - m + 15 - 3 (2 m)}{2 m}$

Step 4

Simplify the numerator.

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Step 4.1

Multiply $- 3$ by $2$ .

$\frac{8 m^{5} - 24 m^{4} + 20 m^{3} - 9 m^{2} - m + 15 - 6 m}{2 m}$

Step 4.2

Subtract $6 m$ from $- m$ .

$\frac{8 m^{5} - 24 m^{4} + 20 m^{3} - 9 m^{2} - 7 m + 15}{2 m}$