4x=18+x+3

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Solution for 4x=18+x+3 equation: 


Simplifying
4x = 18 + x + 3

Reorder the terms:
4x = 18 + 3 + x

Combine like terms: 18 + 3 = 21
4x = 21 + x

Solving
4x = 21 + 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.
4x + -1x = 21 + x + -1x

Combine like terms: 4x + -1x = 3x
3x = 21 + x + -1x

Combine like terms: x + -1x = 0
3x = 21 + 0
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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