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Simplifying
-3x2 + 7 = -5
Reorder the terms:
7 + -3x2 = -5
Solving
7 + -3x2 = -5
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 + -3x2 = -5 + -7
Combine like terms: 7 + -7 = 0
0 + -3x2 = -5 + -7
-3x2 = -5 + -7
Combine like terms: -5 + -7 = -12
-3x2 = -12
Divide each side by '-3'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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