Algebra Examples

$\frac{d - 3}{2 d + 1} + \frac{d - 1}{2 d + 1}$

Step 1

Combine the numerators over the common denominator.

$\frac{d - 3 + d - 1}{2 d + 1}$

Step 2

Add $d$ and $d$ .

$\frac{2 d - 3 - 1}{2 d + 1}$

Step 3

Subtract $1$ from $- 3$ .

$\frac{2 d - 4}{2 d + 1}$

Step 4

Factor $2$ out of $2 d - 4$ .

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Step 4.1

Factor $2$ out of $2 d$ .

$\frac{2 (d) - 4}{2 d + 1}$

Step 4.2

Factor $2$ out of $- 4$ .

$\frac{2 d + 2 \cdot - 2}{2 d + 1}$

Step 4.3

Factor $2$ out of $2 d + 2 \cdot - 2$ .

$\frac{2 (d - 2)}{2 d + 1}$