Who is correct for each round below? Explain why.

Question

Round 3.
(2+3z)-1+ 12+2- 3=28
Round 2
4z - 2.5 + (8 - 2) = 4
Round 3
2118 - (5 + 3~) + 7] = 32
Round 3.
(2 + 3z)- 3. + 12+ 2- 3 = 33
Round 2
4z - 2" 5 + (8 - 2) = 12
Round 3
2118 - (5 + 3~) + 7] = 34