To solve this equation you'll first distribute the 5.
5(x - 4) = 3x + 4
5*x - 5*4 = 3x + 4
5x - 20 = 3x + 4
Now add the 20.
5x - 20 + 20 = 3x + 4 + 20
5x = 3x + 24
Now subtract the 3x
5x - 3x = 3x - 3x + 24
2x = 24
Now divide by 2
2x/2 = 24/2
x = 12
X is 12
Hope this helps :)
