Answer:
8
Step-by-step explanation:
3x-4=20
3x-4+4=20+4
3x=24
3x/3=24/3
x=8
x =8
3x - 4 = 20
Add 4 to each side
3x-4+4 = 20+4
3x = 24
Divide each side by 3
3x/3 =24/3
x = 8
