4x-3=x+9

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Solution for 4x-3=x+9 equation:


Simplifying
4x + -3 = x + 9

Reorder the terms:
-3 + 4x = x + 9

Reorder the terms:
-3 + 4x = 9 + x

Solving
-3 + 4x = 9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-3 + 4x + -1x = 9 + x + -1x

Combine like terms: 4x + -1x = 3x
-3 + 3x = 9 + x + -1x

Combine like terms: x + -1x = 0
-3 + 3x = 9 + 0
-3 + 3x = 9

Add '3' to each side of the equation.
-3 + 3 + 3x = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 3x = 9 + 3
3x = 9 + 3

Combine like terms: 9 + 3 = 12
3x = 12

Divide each side by '3'.
x = 4

Simplifying
x = 4

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