5x+18=6x+21

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Solution for 5x+18=6x+21 equation:


Simplifying
5x + 18 = 6x + 21

Reorder the terms:
18 + 5x = 6x + 21

Reorder the terms:
18 + 5x = 21 + 6x

Solving
18 + 5x = 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 + 5x + -6x = 21 + 6x + -6x

Combine like terms: 5x + -6x = -1x
18 + -1x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 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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