7x-2.1=18.9

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Solution for 7x-2.1=18.9 equation: 


Simplifying
7x + -2.1 = 18.9

Reorder the terms:
-2.1 + 7x = 18.9

Solving
-2.1 + 7x = 18.9

Solving for variable 'x'.

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

Add '2.1' to each side of the equation.
-2.1 + 2.1 + 7x = 18.9 + 2.1

Combine like terms: -2.1 + 2.1 = 0.0
0.0 + 7x = 18.9 + 2.1
7x = 18.9 + 2.1

Combine like terms: 18.9 + 2.1 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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