-4(1+3)=-4*1+(-4)*3

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


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

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

Multiply -4 * 4
-16 = -4 * 1 + (-4) * 3

Multiply -4 * 1
-16 = -4 + (-4) * 3

Multiply -4 * 3
-16 = -4 + -12

Combine like terms: -4 + -12 = -16
-16 = -16

Add '16' to each side of the equation.
-16 + 16 = -16 + 16

Combine like terms: -16 + 16 = 0
0 = -16 + 16

Combine like terms: -16 + 16 = 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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