x+18-4=21

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Solution for x+18-4=21 equation: 


Simplifying
x + 18 + -4 = 21

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

Combine like terms: 18 + -4 = 14
14 + x = 21

Solving
14 + x = 21

Solving for variable 'x'.

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

Add '-14' to each side of the equation.
14 + -14 + x = 21 + -14

Combine like terms: 14 + -14 = 0
0 + x = 21 + -14
x = 21 + -14

Combine like terms: 21 + -14 = 7
x = 7

Simplifying
x = 7

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