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Simplifying
11 = 7 + 2x2
Solving
11 = 7 + 2x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2x2' to each side of the equation.
11 + -2x2 = 7 + 2x2 + -2x2
Combine like terms: 2x2 + -2x2 = 0
11 + -2x2 = 7 + 0
11 + -2x2 = 7
Add '-11' to each side of the equation.
11 + -11 + -2x2 = 7 + -11
Combine like terms: 11 + -11 = 0
0 + -2x2 = 7 + -11
-2x2 = 7 + -11
Combine like terms: 7 + -11 = -4
-2x2 = -4
Divide each side by '-2'.
x2 = 2
Simplifying
x2 = 2
Take the square root of each side:
x = {-1.414213562, 1.414213562}
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