15x+3=6x+21

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Solution for 15x+3=6x+21 equation:


Simplifying
15x + 3 = 6x + 21

Reorder the terms:
3 + 15x = 6x + 21

Reorder the terms:
3 + 15x = 21 + 6x

Solving
3 + 15x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
3 + 15x + -6x = 21 + 6x + -6x

Combine like terms: 15x + -6x = 9x
3 + 9x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
3 + 9x = 21 + 0
3 + 9x = 21

Add '-3' to each side of the equation.
3 + -3 + 9x = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 9x = 21 + -3
9x = 21 + -3

Combine like terms: 21 + -3 = 18
9x = 18

Divide each side by '9'.
x = 2

Simplifying
x = 2

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