Please help me I am struggling so much.

r=3

Step-by-step explanation:

Since the angles opposite are equal, the side are equal

3r+26 = 4r+23

Subtract 3r from each side

3r+26 -3r = 4r+23-3r

26 = r+23

Subtract 23 from each side

26-23 = r+23-23

3 =r

Step-by-step explanation:

To start out with, assuming that this is an isosceles triangle, we can cut it down the middle, and get two congruent right traingles. Because it is congruent, that means theoretically, 3r+26 and 4r+23 must be equal. So we set them equal.

3r+26=4r+23

       -26

3r=4r-3

  -4r

-r=-3

/-1

r=3

So, we can now say that r is equal to 3.

80

step-by-step explanation: