Answer:
x = 3
Step-by-step explanation:
9x-4(x-2)=x+ 20
Distribute the 4 to solve for x
9x-4x+8=x+ 20
Combine like terms
5x+8 = x+20
Subtract x from each side
5x+8-x = x+20-x
4x+8 = 20
Subtract 8 from each side
4x+8-8 = 20-8
4x= 12
Divide by 4
4x/4 = 12/4
x = 3