.4(.8)-2+.5(.8)=-1.28

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Solution for .4(.8)-2+.5(.8)=-1.28 equation: 


Simplifying
0.4(0.8) + -2 + 0.5(0.8) = -1.28

Multiply 0.4 * 0.8
0.32 + -2 + 0.5(0.8) = -1.28

Multiply 0.5 * 0.8
0.32 + -2 + 0.4 = -1.28

Combine like terms: 0.32 + -2 = -1.68
-1.68 + 0.4 = -1.28

Combine like terms: -1.68 + 0.4 = -1.28
-1.28 = -1.28

Add '1.28' to each side of the equation.
-1.28 + 1.28 = -1.28 + 1.28

Combine like terms: -1.28 + 1.28 = 0.00
0.00 = -1.28 + 1.28

Combine like terms: -1.28 + 1.28 = 0.00
0.00 = 0.00

Solving
0.00 = 0.00

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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