9x+21=3x+3

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Solution for 9x+21=3x+3 equation:


Simplifying
9x + 21 = 3x + 3

Reorder the terms:
21 + 9x = 3x + 3

Reorder the terms:
21 + 9x = 3 + 3x

Solving
21 + 9x = 3 + 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 + 9x + -3x = 3 + 3x + -3x

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

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

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

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

Combine like terms: 3 + -21 = -18
6x = -18

Divide each side by '6'.
x = -3

Simplifying
x = -3

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