How do you solve #(90-x)-x=45#?
1 Answer
Jan 19, 2016
# 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 #
