Question 6454
First multiply the 5(2x-4) which will give you 10x-20

Then combine like terms, x+2x+10x= 13x, also combine -(4)-(2)-(20)= -26

You are left with 13x - 26 = 13

Next add 26 to both sides 13+26 = 39

Leaving you with 13x= 39

Solve for X. Divide 13 on both sides.

39/13 = 3

x = 3