0.3x-0.7x-4=12

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Solution for 0.3x-0.7x-4=12 equation:


Simplifying
0.3x + -0.7x + -4 = 12

Reorder the terms:
-4 + 0.3x + -0.7x = 12

Combine like terms: 0.3x + -0.7x = -0.4x
-4 + -0.4x = 12

Solving
-4 + -0.4x = 12

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + -0.4x = 12 + 4

Combine like terms: -4 + 4 = 0
0 + -0.4x = 12 + 4
-0.4x = 12 + 4

Combine like terms: 12 + 4 = 16
-0.4x = 16

Divide each side by '-0.4'.
x = -40

Simplifying
x = -40

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