Let's assume x is the blank.
The equation is therefore:
[tex]
7\times(5-2)=(7\times5)-(x\times2) \\
7\times3=35-2x \\
21=35-2x \\
21-35=-2x \\
-14=-2x\Longrightarrow x=\frac{-14}{-2}=\boxed{7}
[/tex]
Answer:
Step-by-step explanation:
7x(3) = 21
(7x5) - (7x2) = 21
35-14=21
Answer is (7 x 2)or 7
