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Simplifying
90 + -1x2 = 0
Solving
90 + -1x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-90' to each side of the equation.
90 + -90 + -1x2 = 0 + -90
Combine like terms: 90 + -90 = 0
0 + -1x2 = 0 + -90
-1x2 = 0 + -90
Combine like terms: 0 + -90 = -90
-1x2 = -90
Divide each side by '-1'.
x2 = 90
Simplifying
x2 = 90
Take the square root of each side:
x = {-9.486832981, 9.486832981}
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