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Simplifying
9 + -5x2 = 2x2 + -4
Reorder the terms:
9 + -5x2 = -4 + 2x2
Solving
9 + -5x2 = -4 + 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.
9 + -5x2 + -2x2 = -4 + 2x2 + -2x2
Combine like terms: -5x2 + -2x2 = -7x2
9 + -7x2 = -4 + 2x2 + -2x2
Combine like terms: 2x2 + -2x2 = 0
9 + -7x2 = -4 + 0
9 + -7x2 = -4
Add '-9' to each side of the equation.
9 + -9 + -7x2 = -4 + -9
Combine like terms: 9 + -9 = 0
0 + -7x2 = -4 + -9
-7x2 = -4 + -9
Combine like terms: -4 + -9 = -13
-7x2 = -13
Divide each side by '-7'.
x2 = 1.857142857
Simplifying
x2 = 1.857142857
Take the square root of each side:
x = {-1.362770288, 1.362770288}
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