.4x-9=-.4x-3

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Solution for .4x-9=-.4x-3 equation:


Simplifying
0.4x + -9 = -0.4x + -3

Reorder the terms:
-9 + 0.4x = -0.4x + -3

Reorder the terms:
-9 + 0.4x = -3 + -0.4x

Solving
-9 + 0.4x = -3 + -0.4x

Solving for variable 'x'.

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

Add '0.4x' to each side of the equation.
-9 + 0.4x + 0.4x = -3 + -0.4x + 0.4x

Combine like terms: 0.4x + 0.4x = 0.8x
-9 + 0.8x = -3 + -0.4x + 0.4x

Combine like terms: -0.4x + 0.4x = 0.0
-9 + 0.8x = -3 + 0.0
-9 + 0.8x = -3

Add '9' to each side of the equation.
-9 + 9 + 0.8x = -3 + 9

Combine like terms: -9 + 9 = 0
0 + 0.8x = -3 + 9
0.8x = -3 + 9

Combine like terms: -3 + 9 = 6
0.8x = 6

Divide each side by '0.8'.
x = 7.5

Simplifying
x = 7.5

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