4x+21=-4(-x-4)

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Solution for 4x+21=-4(-x-4) equation:


Simplifying
4x + 21 = -4(-1x + -4)

Reorder the terms:
21 + 4x = -4(-1x + -4)

Reorder the terms:
21 + 4x = -4(-4 + -1x)
21 + 4x = (-4 * -4 + -1x * -4)
21 + 4x = (16 + 4x)

Add '-4x' to each side of the equation.
21 + 4x + -4x = 16 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 + 0 = 16 + 4x + -4x
21 = 16 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 = 16 + 0
21 = 16

Solving
21 = 16

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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