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Simplifying
5x2 + -2 = 123
Reorder the terms:
-2 + 5x2 = 123
Solving
-2 + 5x2 = 123
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '2' to each side of the equation.
-2 + 2 + 5x2 = 123 + 2
Combine like terms: -2 + 2 = 0
0 + 5x2 = 123 + 2
5x2 = 123 + 2
Combine like terms: 123 + 2 = 125
5x2 = 125
Divide each side by '5'.
x2 = 25
Simplifying
x2 = 25
Take the square root of each side:
x = {-5, 5}
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