3.9(10+9)=

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Solution for 3.9(10+9)= equation: 


Simplifying
3.9(10 + 9) = 0

Combine like terms: 10 + 9 = 19
3.9(19) = 0

Multiply 3.9 * 19
74.1 = 0

Solving
74.1 = 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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