Pre-Algebra Examples

$x + 9 = 18 - 2$

Step 1

Subtract $2$ from $18$ .

$x + 9 = 16$

Step 2

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

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Step 2.1

Subtract $9$ from both sides of the equation.

$x = 16 - 9$

Step 2.2

Subtract $9$ from $16$ .

$x = 7$