-5x-4(x+2x)=100

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Solution for -5x-4(x+2x)=100 equation: 


Simplifying
-5x + -4(x + 2x) = 100

Combine like terms: x + 2x = 3x
-5x + -4(3x) = 100

Remove parenthesis around (3x)
-5x + -4 * 3x = 100

Multiply -4 * 3
-5x + -12x = 100

Combine like terms: -5x + -12x = -17x
-17x = 100

Solving
-17x = 100

Solving for variable 'x'.

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

Divide each side by '-17'.
x = -5.882352941

Simplifying
x = -5.882352941

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