Question #16f10

2 Answers
Feb 7, 2018

x=26x=26

Explanation:

Because the lines are parallel, 4x-204x20 should equal 84.
Set the two equal: 4x-20 = 844x20=84
Add 20 to both sides: 4x = 1044x=104
Divide both sides by 4 to get x by itself: x = 26x=26

Feb 7, 2018

x=26x=26

Explanation:

"the angles associated with parallel lines"the angles associated with parallel lines

4x-20=84larrcolor(blue)"corresponding angles are equal"4x20=84corresponding angles are equal

"add 20 to both sides"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