Solve for x 7+x+2=9+3

$7 + x + 2 = 9 + 3$

Add $7$ and $2$ .

$x + 9 = 9 + 3$

Add $9$ and $3$ .

$x + 9 = 12$

Move all terms not containing $x$ to the right side of the equation.

Subtract $9$ from both sides of the equation.

$x = 12 - 9$

Subtract $9$ from $12$ .

$x = 3$