How do you solve #-3( - 2+ x ) + 7= 31#?

1 Answer
Suren Abreu
Feb 22, 2017

#x=-6#

Explanation:

#-3(-2+x)+7=31#

Open the brackets and simplify. The product of two negatives is a positive; the product of a negative and positive is a negative.

#6-3x+7=31#

#13-3x=31#

Subtract #13# from both sides.

#-3x=18#

Divide both sides by #-3#. When a positive is divided by a negative, the result is a negative. When a negative is divided by a negative the result is a positive.

#x=-6#

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