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Simplifying
9x2 + -1 = 63
Reorder the terms:
-1 + 9x2 = 63
Solving
-1 + 9x2 = 63
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '1' to each side of the equation.
-1 + 1 + 9x2 = 63 + 1
Combine like terms: -1 + 1 = 0
0 + 9x2 = 63 + 1
9x2 = 63 + 1
Combine like terms: 63 + 1 = 64
9x2 = 64
Divide each side by '9'.
x2 = 7.111111111
Simplifying
x2 = 7.111111111
Take the square root of each side:
x = {-2.666666667, 2.666666667}
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