-7(0.2x+0.3)-2.5=-0.4

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Solution for -7(0.2x+0.3)-2.5=-0.4 equation: 


Simplifying
-7(0.2x + 0.3) + -2.5 = -0.4

Reorder the terms:
-7(0.3 + 0.2x) + -2.5 = -0.4
(0.3 * -7 + 0.2x * -7) + -2.5 = -0.4
(-2.1 + -1.4x) + -2.5 = -0.4

Reorder the terms:
-2.1 + -2.5 + -1.4x = -0.4

Combine like terms: -2.1 + -2.5 = -4.6
-4.6 + -1.4x = -0.4

Solving
-4.6 + -1.4x = -0.4

Solving for variable 'x'.

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

Add '4.6' to each side of the equation.
-4.6 + 4.6 + -1.4x = -0.4 + 4.6

Combine like terms: -4.6 + 4.6 = 0.0
0.0 + -1.4x = -0.4 + 4.6
-1.4x = -0.4 + 4.6

Combine like terms: -0.4 + 4.6 = 4.2
-1.4x = 4.2

Divide each side by '-1.4'.
x = -3

Simplifying
x = -3

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