21x+3x=36+15x

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Solution for 21x+3x=36+15x equation: 


Simplifying
21x + 3x = 36 + 15x

Combine like terms: 21x + 3x = 24x
24x = 36 + 15x

Solving
24x = 36 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
24x + -15x = 36 + 15x + -15x

Combine like terms: 24x + -15x = 9x
9x = 36 + 15x + -15x

Combine like terms: 15x + -15x = 0
9x = 36 + 0
9x = 36

Divide each side by '9'.
x = 4

Simplifying
x = 4

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