0.3-4=0.8-0.2w

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Solution for 0.3-4=0.8-0.2w equation: 


Simplifying
0.3 + -4 = 0.8 + -0.2w

Combine like terms: 0.3 + -4 = -3.7
-3.7 = 0.8 + -0.2w

Solving
-3.7 = 0.8 + -0.2w

Solving for variable 'w'.

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

Add '0.2w' to each side of the equation.
-3.7 + 0.2w = 0.8 + -0.2w + 0.2w

Combine like terms: -0.2w + 0.2w = 0.0
-3.7 + 0.2w = 0.8 + 0.0
-3.7 + 0.2w = 0.8

Add '3.7' to each side of the equation.
-3.7 + 3.7 + 0.2w = 0.8 + 3.7

Combine like terms: -3.7 + 3.7 = 0.0
0.0 + 0.2w = 0.8 + 3.7
0.2w = 0.8 + 3.7

Combine like terms: 0.8 + 3.7 = 4.5
0.2w = 4.5

Divide each side by '0.2'.
w = 22.5

Simplifying
w = 22.5

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