Let the missing number be 'x'
[tex]\sf 5 (x + 2 ) = 35 \\ \\ Distribute \ (5) (x) + (5) (2) = 35 \\ \\ 5x + 10 = 35 \\ \\ Subtract \ 10 \ from \ both \ sides. \\ \\ 5x + 10 - 10 = 35- 10 \\ \\ 5x = 25 \\ \\ Divide \ both \ sides \ by \ 5. \\ \\ \frac{5x}{5} = \frac{25}{5} \\ \\ x = 5[/tex]