Question

Help me solve this problem please

Answer 1

I hope it helps :) But the answer should be 6

Answer 2

6

Explanation:

2(6) - 3(6) + 20 + 5(6) - 40 = 4 CORRECT

2(8) - 3(8) + 20 + 5(8) - 40 = 12 WRONG

2(16) - 3(16) + 20 + 5(16) - 40 = 44 WRONG

2(18) - 3(18) + 20 + 5(18) - 40 = 52 WRONG