4x-21=3-4x

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Solution for 4x-21=3-4x equation:


Simplifying
4x + -21 = 3 + -4x

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

Solving
-21 + 4x = 3 + -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.
-21 + 4x + 4x = 3 + -4x + 4x

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

Combine like terms: -4x + 4x = 0
-21 + 8x = 3 + 0
-21 + 8x = 3

Add '21' to each side of the equation.
-21 + 21 + 8x = 3 + 21

Combine like terms: -21 + 21 = 0
0 + 8x = 3 + 21
8x = 3 + 21

Combine like terms: 3 + 21 = 24
8x = 24

Divide each side by '8'.
x = 3

Simplifying
x = 3

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