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

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Answer 1 · 2016-11-02T13:49:54

#x = -2#

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

#-7x - 21 = -x - 9#

#-7x - 21 + 7x + 9 = -x - 9 + 7x + 9#

#-21 + 9 = -x + 7x#

#-12 = 6x#

#-12/6 = (6x)/6#

#x = -2#