2x+18=21

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Solution for 2x+18=21 equation:


Simplifying
2x + 18 = 21

Reorder the terms:
18 + 2x = 21

Solving
18 + 2x = 21

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 2x = 21 + -18

Combine like terms: 18 + -18 = 0
0 + 2x = 21 + -18
2x = 21 + -18

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

Divide each side by '2'.
x = 1.5

Simplifying
x = 1.5

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