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Simplifying
9x2 + 18 + 9 = 36
Reorder the terms:
18 + 9 + 9x2 = 36
Combine like terms: 18 + 9 = 27
27 + 9x2 = 36
Solving
27 + 9x2 = 36
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-27' to each side of the equation.
27 + -27 + 9x2 = 36 + -27
Combine like terms: 27 + -27 = 0
0 + 9x2 = 36 + -27
9x2 = 36 + -27
Combine like terms: 36 + -27 = 9
9x2 = 9
Divide each side by '9'.
x2 = 1
Simplifying
x2 = 1
Take the square root of each side:
x = {-1, 1}
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