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# Calculator Output

```3 = xx3

Cross multiply:
3 * 3 = x * x

Simplifying
3 * 3 = x * x

Multiply 3 * 3
9 = x * x

Multiply x * x
9 = x2

Solving
9 = x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x2' to each side of the equation.
9 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
9 + -1x2 = 0

Add '-9' to each side of the equation.
9 + -9 + -1x2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1x2 = 0 + -9
-1x2 = 0 + -9

Combine like terms: 0 + -9 = -9
-1x2 = -9

Divide each side by '-1'.
x2 = 9

Simplifying
x2 = 9

Take the square root of each side:
x = {-3, 3}```
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# Proportion Calculator

Proportion: Variable:
 =

Hint: Selecting "AUTO" in the variable box will make the calculator automatically solve for the first variable it sees.

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