.4x-.5(4)=.8

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Solution for .4x-.5(4)=.8 equation:


Simplifying
0.4x + -0.5(4) = 0.8

Multiply -0.5 * 4
0.4x + -2 = 0.8

Reorder the terms:
-2 + 0.4x = 0.8

Solving
-2 + 0.4x = 0.8

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 0.4x = 0.8 + 2

Combine like terms: -2 + 2 = 0
0 + 0.4x = 0.8 + 2
0.4x = 0.8 + 2

Combine like terms: 0.8 + 2 = 2.8
0.4x = 2.8

Divide each side by '0.4'.
x = 7

Simplifying
x = 7

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