y = 3(4-2)
*solve bracket first
y = 3(2)
y = 6

y= 3 ( 4 - 2)
y = 3 (2)
y = 6

substitue x for 4
y=3(x-2)
y=3(4-2)
then you do distributive property
3*4=12 3*2 =6
y=(12-6)
y=6

y = 3 (x-2)

Substitute for x with x = 4

y = 3 (4 - 2)
y = 3 (2)
y = 6