Use PEMDAS to solve
11w - 4(3) = 3w + 89 / 4
11w - 12 = 3w + 22.25
add 12 to both sides
11w = 3w + 34.25
subtract 3w from both sides
8w = 34.25
divide 8 from both sides
w = 4.28125 or
w = 4.28 or
w = 4.3
Which ever way you need to round it XD
Hope this helps :)