a, 3x-2 . 3 = 243
3x-1 = 35
x - 1 = 5
x = 5 + 1
x = 6
c, 64 . 4x - 3 = 168
(43). 4x-3 = (42)8
4x = 416
x = 16
a: =>x-2+1=5
=>x-1=5
=>x=6
c: =>x-3+3=16
=>x=16
a, 3x-2 . 3 = 243
3x-1 = 35
x - 1 = 5
x = 5 + 1
x = 6
c, 64 . 4x - 3 = 168
(43). 4x-3 = (42)8
4x = 416
x = 16