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Simplifying
-4x2 + -7 = -23
Reorder the terms:
-7 + -4x2 = -23
Solving
-7 + -4x2 = -23
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + -4x2 = -23 + 7
Combine like terms: -7 + 7 = 0
0 + -4x2 = -23 + 7
-4x2 = -23 + 7
Combine like terms: -23 + 7 = -16
-4x2 = -16
Divide each side by '-4'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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