1-(-3)=4

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


Simplifying
1 + -1(-3) = 4

Multiply -1 * -3
1 + 3 = 4

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

Add '-4' to each side of the equation.
4 + -4 = 4 + -4

Combine like terms: 4 + -4 = 0
0 = 4 + -4

Combine like terms: 4 + -4 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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