The sum of triangle, square and circle is 32, triangle minus 3 equals circle, triangle divided by 2 equals square, how many are they?

The sum of triangle, square and circle is 32, triangle minus 3 equals circle, triangle divided by 2 equals square, how many are they?

Delta - 3 = 0, so delta = 3
Delta / 2 = (so □ = 1.5)
Delta + Θ + □ = 32, so Θ is 27.5