Pre-Algebra Examples

$7 x (x + y) - (x + y)$

Step 1

Factor $x + y$ out of $7 x (x + y)$ .

$(x + y) (7 x) - (x + y)$

Step 2

Factor $x + y$ out of $- (x + y)$ .

$(x + y) (7 x) + (x + y) \cdot - 1$

Step 3

Factor $x + y$ out of $(x + y) (7 x) + (x + y) \cdot - 1$ .

$(x + y) (7 x - 1)$