9x+18=6x+21

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Solution for 9x+18=6x+21 equation:


Simplifying
9x + 18 = 6x + 21

Reorder the terms:
18 + 9x = 6x + 21

Reorder the terms:
18 + 9x = 21 + 6x

Solving
18 + 9x = 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.
18 + 9x + -6x = 21 + 6x + -6x

Combine like terms: 9x + -6x = 3x
18 + 3x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
18 + 3x = 21 + 0
18 + 3x = 21

Add '-18' to each side of the equation.
18 + -18 + 3x = 21 + -18

Combine like terms: 18 + -18 = 0
0 + 3x = 21 + -18
3x = 21 + -18

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

Divide each side by '3'.
x = 1

Simplifying
x = 1

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