Question

I need the answer I don’t understand this is a practice question

Answer 1

ANSWER :

The answer is 4

EXPLANATION :

From the problem, looking at the last line, we have :

$8-\_=4$

Subtracting 4 from 8 will give us 4.

Applying 4 to the second line :

$\begin{gathered} 3+5-4=8-4 \\ 8-4=4 \\ 4=4 \end{gathered}$