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Simplifying
18 = 6x2 + -1
Reorder the terms:
18 = -1 + 6x2
Solving
18 = -1 + 6x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-6x2' to each side of the equation.
18 + -6x2 = -1 + 6x2 + -6x2
Combine like terms: 6x2 + -6x2 = 0
18 + -6x2 = -1 + 0
18 + -6x2 = -1
Add '-18' to each side of the equation.
18 + -18 + -6x2 = -1 + -18
Combine like terms: 18 + -18 = 0
0 + -6x2 = -1 + -18
-6x2 = -1 + -18
Combine like terms: -1 + -18 = -19
-6x2 = -19
Divide each side by '-6'.
x2 = 3.166666667
Simplifying
x2 = 3.166666667
Take the square root of each side:
x = {-1.779513042, 1.779513042}
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