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Simplifying
5 = 9x2 + -7
Reorder the terms:
5 = -7 + 9x2
Solving
5 = -7 + 9x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9x2' to each side of the equation.
5 + -9x2 = -7 + 9x2 + -9x2
Combine like terms: 9x2 + -9x2 = 0
5 + -9x2 = -7 + 0
5 + -9x2 = -7
Add '-5' to each side of the equation.
5 + -5 + -9x2 = -7 + -5
Combine like terms: 5 + -5 = 0
0 + -9x2 = -7 + -5
-9x2 = -7 + -5
Combine like terms: -7 + -5 = -12
-9x2 = -12
Divide each side by '-9'.
x2 = 1.333333333
Simplifying
x2 = 1.333333333
Take the square root of each side:
x = {-1.154700538, 1.154700538}
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