Question #16f10

2 Answers
Max G.
Feb 7, 2018

#x=26#

Explanation:

Because the lines are parallel, #4x-20# should equal 84.
Set the two equal: #4x-20 = 84#
Add 20 to both sides: #4x = 104#
Divide both sides by 4 to get x by itself: #x = 26#

Jim G.
Feb 7, 2018

#x=26#

Explanation:

#"the angles associated with parallel lines"#

#4x-20=84larrcolor(blue)"corresponding angles are equal"#

#"add 20 to both sides"#

#4xcancel(-20)cancel(+20)=84+20#

#rArr4x=104#

#"divide both sides by 4"#

#(cancel(4) x)/cancel(4)=104/4#

#rArrx=26#

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