Question

Solve for x.
2x + 15
3x - 20
x = [?]

Answer 1

x= 7

3x-20

2x+15

you would add 3x+2x equals 5x and 20 +15= 35

5x+35

35 divided by 5 is 7 and then on the 5x divide by 5 and leaves x=7

Answer 2

35

Explanation:

Angles 2x + 15 and 3x - 20 are adjacent angles.

Adjacent angles are equal.

3x - 20 = 2x + 15

3x - 2x = 15 + 20

x = 35