4.3-(-3.9)=

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Solution for 4.3-(-3.9)= equation: 


Simplifying
4.3 + -1(-3.9) = 0

Multiply -1 * -3.9
4.3 + 3.9 = 0

Combine like terms: 4.3 + 3.9 = 8.2
8.2 = 0

Solving
8.2 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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