3(1)+5(-3)=-12

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Solution for 3(1)+5(-3)=-12 equation: 


Simplifying
3(1) + 5(-3) = -12

Multiply 3 * 1
3 + 5(-3) = -12

Multiply 5 * -3
3 + -15 = -12

Combine like terms: 3 + -15 = -12
-12 = -12

Add '12' to each side of the equation.
-12 + 12 = -12 + 12

Combine like terms: -12 + 12 = 0
0 = -12 + 12

Combine like terms: -12 + 12 = 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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