I think that the answer is a increase
2x-1=5
2(3)-1=5
6-1=5
5=5
x=3
Answer:
108º
Step-by-step explanation:
to find the sum of interior angles: ( n − 2 ) × 180 = x
x = 540º
n = # of interior angles
first, solve for n
(n - 2) • 180 = 540 distribute to 180 to (n - 2)
180n - 360 = 540 add 360 to both sides
180n = 900 divide both sides by 180
n = 5
to find measure of each angle:
540 ÷ 5 = 108º
First you have to distribute. -3y +12=18. -3y=6. y= -2.
