1-(-3)=9

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Solution for 1-(-3)=9 equation: 


Simplifying
1 + -1(-3) = 9

Multiply -1 * -3
1 + 3 = 9

Combine like terms: 1 + 3 = 4
4 = 9

Solving
4 = 9

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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