3-(-4)=7

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Solution for 3-(-4)=7 equation: 


Simplifying
3 + -1(-4) = 7

Multiply -1 * -4
3 + 4 = 7

Combine like terms: 3 + 4 = 7
7 = 7

Add '-7' to each side of the equation.
7 + -7 = 7 + -7

Combine like terms: 7 + -7 = 0
0 = 7 + -7

Combine like terms: 7 + -7 = 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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