6x+18-2x=3x+21

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Solution for 6x+18-2x=3x+21 equation:


Simplifying
6x + 18 + -2x = 3x + 21

Reorder the terms:
18 + 6x + -2x = 3x + 21

Combine like terms: 6x + -2x = 4x
18 + 4x = 3x + 21

Reorder the terms:
18 + 4x = 21 + 3x

Solving
18 + 4x = 21 + 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.
18 + 4x + -3x = 21 + 3x + -3x

Combine like terms: 4x + -3x = 1x
18 + 1x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
18 + 1x = 21 + 0
18 + 1x = 21

Add '-18' to each side of the equation.
18 + -18 + 1x = 21 + -18

Combine like terms: 18 + -18 = 0
0 + 1x = 21 + -18
1x = 21 + -18

Combine like terms: 21 + -18 = 3
1x = 3

Divide each side by '1'.
x = 3

Simplifying
x = 3

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