8-(-9)=1

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Solution for 8-(-9)=1 equation: 


Simplifying
8 + -1(-9) = 1

Multiply -1 * -9
8 + 9 = 1

Combine like terms: 8 + 9 = 17
17 = 1

Solving
17 = 1

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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