How do you solve #(90-x)-x=45#?

1 Answer
Jan 19, 2016

Answer:

# x = 45/2 #

Explanation:

First rewrite the equation without brackets.

90 - x - x = 45

( collect 'like terms' ) : 90 - 2x = 45

(subtract 90 from both sides ) : 90 - 90 - 2x = 45 - 90

and so - 2x = - 45

(Finally divide both sides by - 2 )

# (-2x)/- 2 =( -45)/-2 rArr x = 45/2 #