9-(-1+3)=4

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Solution for 9-(-1+3)=4 equation: 


Simplifying
9 + -1(-1 + 3) = 4

Combine like terms: -1 + 3 = 2
9 + -1(2) = 4

Multiply -1 * 2
9 + -2 = 4

Combine like terms: 9 + -2 = 7
7 = 4

Solving
7 = 4

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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