-4(0.1x+0.3)-0.9=-0.5

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Solution for -4(0.1x+0.3)-0.9=-0.5 equation: 


Simplifying
-4(0.1x + 0.3) + -0.9 = -0.5

Reorder the terms:
-4(0.3 + 0.1x) + -0.9 = -0.5
(0.3 * -4 + 0.1x * -4) + -0.9 = -0.5
(-1.2 + -0.4x) + -0.9 = -0.5

Reorder the terms:
-1.2 + -0.9 + -0.4x = -0.5

Combine like terms: -1.2 + -0.9 = -2.1
-2.1 + -0.4x = -0.5

Solving
-2.1 + -0.4x = -0.5

Solving for variable 'x'.

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

Add '2.1' to each side of the equation.
-2.1 + 2.1 + -0.4x = -0.5 + 2.1

Combine like terms: -2.1 + 2.1 = 0.0
0.0 + -0.4x = -0.5 + 2.1
-0.4x = -0.5 + 2.1

Combine like terms: -0.5 + 2.1 = 1.6
-0.4x = 1.6

Divide each side by '-0.4'.
x = -4

Simplifying
x = -4

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