Angles D and F are supplementary, so
.. (19x -26) +(7x -2) = 180
.. 26x = 208
.. x = 208/26 = 8
∠EFG = (7x -2)° = (7*8 -2)° = 54°
Selection C is appropriate.
23x-13=2(x+2)
First you would distribute the 2 into the parenthesis
It will look like this after: 23x-13=2x+4
Then you would subtract 2x on both sides because u have to get the x's on one side
It will look like this after:21x-13=4
Then you would add 13 to both sides
It will look like this after: 21x=17
Then you would divide 21 on both sides
Your final product is 21/17
The total angle sum of a triangle is 180°
As such, 180= 78 + 2s +4s
102= 6s
s=17
