4x+18=21

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Solution for 4x+18=21 equation: 


Simplifying
4x + 18 = 21

Reorder the terms:
18 + 4x = 21

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

Combine like terms: 18 + -18 = 0
0 + 4x = 21 + -18
4x = 21 + -18

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

Divide each side by '4'.
x = 0.75

Simplifying
x = 0.75

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