x-21+3x=-8-3x-13

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Solution for x-21+3x=-8-3x-13 equation:


Simplifying
x + -21 + 3x = -8 + -3x + -13

Reorder the terms:
-21 + x + 3x = -8 + -3x + -13

Combine like terms: x + 3x = 4x
-21 + 4x = -8 + -3x + -13

Reorder the terms:
-21 + 4x = -8 + -13 + -3x

Combine like terms: -8 + -13 = -21
-21 + 4x = -21 + -3x

Add '21' to each side of the equation.
-21 + 21 + 4x = -21 + 21 + -3x

Combine like terms: -21 + 21 = 0
0 + 4x = -21 + 21 + -3x
4x = -21 + 21 + -3x

Combine like terms: -21 + 21 = 0
4x = 0 + -3x
4x = -3x

Solving
4x = -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
4x + 3x = -3x + 3x

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

Combine like terms: -3x + 3x = 0
7x = 0

Divide each side by '7'.
x = 0

Simplifying
x = 0

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