The given expression is
20 - (2x6) + 8 ÷4
We need to follow the rules of operations.
The first operation is to solve the parenthesis
So 2 × 6 = 12
So now we have
20 - 12 + 8 ÷ 4
The next operation is division
So 8 ÷ 4 = 2
The expression becomes
20 - 12 + 2
Now 20 -12 = 8
So we get
8 + 2 = 10
The correct answer is 10.
What Carlos did wrong can be explained if all the steps of Carlos are shown. But as the steps of Carlos are not there, it shall not be possible to explain what he did wrong.
