0.8*(x)+0.2(10)=5.5

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Solution for 0.8*(x)+0.2(10)=5.5 equation: 


Simplifying
0.8(x) + 0.2(10) = 5.5

Multiply 0.2 * 10
0.8x + 2 = 5.5

Reorder the terms:
2 + 0.8x = 5.5

Solving
2 + 0.8x = 5.5

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 + 0.8x = 5.5 + -2

Combine like terms: 2 + -2 = 0
0 + 0.8x = 5.5 + -2
0.8x = 5.5 + -2

Combine like terms: 5.5 + -2 = 3.5
0.8x = 3.5

Divide each side by '0.8'.
x = 4.375

Simplifying
x = 4.375

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