3.20=0.8x

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Solution for 3.20=0.8x equation: 


Simplifying
3.20 = 0.8x

Solving
3.20 = 0.8x

Solving for variable 'x'.

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

Add '-0.8x' to each side of the equation.
3.20 + -0.8x = 0.8x + -0.8x

Combine like terms: 0.8x + -0.8x = 0.0
3.20 + -0.8x = 0.0

Add '-3.20' to each side of the equation.
3.20 + -3.20 + -0.8x = 0.0 + -3.20

Combine like terms: 3.20 + -3.20 = 0.00
0.00 + -0.8x = 0.0 + -3.20
-0.8x = 0.0 + -3.20

Combine like terms: 0.0 + -3.20 = -3.2
-0.8x = -3.2

Divide each side by '-0.8'.
x = 4

Simplifying
x = 4

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