-(x+3x-5+21)=0

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Solution for -(x+3x-5+21)=0 equation:


Simplifying
-1(x + 3x + -5 + 21) = 0

Reorder the terms:
-1(-5 + 21 + x + 3x) = 0

Combine like terms: -5 + 21 = 16
-1(16 + x + 3x) = 0

Combine like terms: x + 3x = 4x
-1(16 + 4x) = 0
(16 * -1 + 4x * -1) = 0
(-16 + -4x) = 0

Solving
-16 + -4x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '16' to each side of the equation.
-16 + 16 + -4x = 0 + 16

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

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

Divide each side by '-4'.
x = -4

Simplifying
x = -4

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