280-39.3*x+x*2=0

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Solution for 280-39.3*x+x*2=0 equation:


Simplifying
280 + -39.3x + x * 2 = 0

Reorder the terms for easier multiplication:
280 + -39.3x + 2x = 0

Combine like terms: -39.3x + 2x = -37.3x
280 + -37.3x = 0

Solving
280 + -37.3x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-280' to each side of the equation.
280 + -280 + -37.3x = 0 + -280

Combine like terms: 280 + -280 = 0
0 + -37.3x = 0 + -280
-37.3x = 0 + -280

Combine like terms: 0 + -280 = -280
-37.3x = -280

Divide each side by '-37.3'.
x = 7.506702413

Simplifying
x = 7.506702413

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