-x^2+16=7

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Solution for -x^2+16=7 equation: 


Simplifying
-1x2 + 16 = 7

Reorder the terms:
16 + -1x2 = 7

Solving
16 + -1x2 = 7

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + -1x2 = 7 + -16

Combine like terms: 16 + -16 = 0
0 + -1x2 = 7 + -16
-1x2 = 7 + -16

Combine like terms: 7 + -16 = -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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