x-21=25-3x

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Solution for x-21=25-3x equation:


Simplifying
x + -21 = 25 + -3x

Reorder the terms:
-21 + x = 25 + -3x

Solving
-21 + x = 25 + -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.
-21 + x + 3x = 25 + -3x + 3x

Combine like terms: x + 3x = 4x
-21 + 4x = 25 + -3x + 3x

Combine like terms: -3x + 3x = 0
-21 + 4x = 25 + 0
-21 + 4x = 25

Add '21' to each side of the equation.
-21 + 21 + 4x = 25 + 21

Combine like terms: -21 + 21 = 0
0 + 4x = 25 + 21
4x = 25 + 21

Combine like terms: 25 + 21 = 46
4x = 46

Divide each side by '4'.
x = 11.5

Simplifying
x = 11.5

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