4x-2x-13=-4x-21

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Solution for 4x-2x-13=-4x-21 equation:


Simplifying
4x + -2x + -13 = -4x + -21

Reorder the terms:
-13 + 4x + -2x = -4x + -21

Combine like terms: 4x + -2x = 2x
-13 + 2x = -4x + -21

Reorder the terms:
-13 + 2x = -21 + -4x

Solving
-13 + 2x = -21 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-13 + 2x + 4x = -21 + -4x + 4x

Combine like terms: 2x + 4x = 6x
-13 + 6x = -21 + -4x + 4x

Combine like terms: -4x + 4x = 0
-13 + 6x = -21 + 0
-13 + 6x = -21

Add '13' to each side of the equation.
-13 + 13 + 6x = -21 + 13

Combine like terms: -13 + 13 = 0
0 + 6x = -21 + 13
6x = -21 + 13

Combine like terms: -21 + 13 = -8
6x = -8

Divide each side by '6'.
x = -1.333333333

Simplifying
x = -1.333333333

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