Pre-Algebra Examples

$15 + u - 22 = 9^{2}$

Step 1

Subtract $22$ from $15$ .

$u - 7 = 9^{2}$

Step 2

Raise $9$ to the power of $2$ .

$u - 7 = 81$

Step 3

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

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Step 3.1

Add $7$ to both sides of the equation.

$u = 81 + 7$

Step 3.2

Add $81$ and $7$ .

$u = 88$