PLEASE HELP I WANNA Sleep BC it's midnight

Please answer both A and B

For Brainliest

Pick any of the two sides and set them equal to one another. So we'll have three different equations

4(x-1) = x+8

or

x+8 = 2x+4

or

4(x-1) = 2x+4

This works because in any equilateral triangle, the three sides are the same length.

If you're curious about the value of x, then we could do the following steps.

x+8 = 2x+4

2x+4 = x+8

2x-x = 8-4

x = 4

If x = 4, then

Each side is 12 units long

5-x=40+29 (x=69)

Step-by-step explanation:

5y

step-by-step explanation:

sadsdda

step-by-step explanation: