How do you solve #9x - ( 5x + 5) = 5x - 45#?

Question

1022 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-09-28T00:38:15

#x=40#

#9x-(5x+5)=5x-45#

First, expand the brackets:

#9x-5x-5=5x-45#

Collect like terms on the left side:

#4x-5=5x-45#

Add #5# to both sides:

#4x-5+5=5x-45+5#

#4x=5x-40#

Subtract #5x# from both sides:

#4x-5x=5x-40-5x#

#-x=-40#

Multiply both sides by #-1#:

#x=40#