-0.4x+0.2x-1=-7

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Solution for -0.4x+0.2x-1=-7 equation:


Simplifying
-0.4x + 0.2x + -1 = -7

Reorder the terms:
-1 + -0.4x + 0.2x = -7

Combine like terms: -0.4x + 0.2x = -0.2x
-1 + -0.2x = -7

Solving
-1 + -0.2x = -7

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + -0.2x = -7 + 1

Combine like terms: -1 + 1 = 0
0 + -0.2x = -7 + 1
-0.2x = -7 + 1

Combine like terms: -7 + 1 = -6
-0.2x = -6

Divide each side by '-0.2'.
x = 30

Simplifying
x = 30

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