How do you solve $- 7 (x + 3) = - (x + 9)$ $-7( x + 3) = - ( x + 9)$ ?

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Answer 1 · 2016-11-02T13:49:54

$x = - 2$ $x = -2$

Step 1) Expand the terms in the parenthesis
Step 2) Solve for $x$ $x$ while keeping the equation balanced

$- 7 x - 21 = - x - 9$ $-7x - 21 = -x - 9$

$- 7 x - 21 + 7 x + 9 = - x - 9 + 7 x + 9$ $-7x - 21 + 7x + 9 = -x - 9 + 7x + 9$

$- 21 + 9 = - x + 7 x$ $-21 + 9 = -x + 7x$

$- 12 = 6 x$ $-12 = 6x$

$- \frac{12}{6} = \frac{6 x}{6}$ $-12/6 = (6x)/6$

$x = - 2$ $x = -2$

How do you solve -7( x + 3) = - ( x + 9)−7(x+3)=−(x+9)-7( x + 3) = - ( x + 9)?