3.9=4.7-.2x

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Solution for 3.9=4.7-.2x equation: 


Simplifying
3.9 = 4.7 + -0.2x

Solving
3.9 = 4.7 + -0.2x

Solving for variable 'x'.

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

Add '0.2x' to each side of the equation.
3.9 + 0.2x = 4.7 + -0.2x + 0.2x

Combine like terms: -0.2x + 0.2x = 0.0
3.9 + 0.2x = 4.7 + 0.0
3.9 + 0.2x = 4.7

Add '-3.9' to each side of the equation.
3.9 + -3.9 + 0.2x = 4.7 + -3.9

Combine like terms: 3.9 + -3.9 = 0.0
0.0 + 0.2x = 4.7 + -3.9
0.2x = 4.7 + -3.9

Combine like terms: 4.7 + -3.9 = 0.8
0.2x = 0.8

Divide each side by '0.2'.
x = 4

Simplifying
x = 4

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