3x-2.1=8.4

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Solution for 3x-2.1=8.4 equation: 


Simplifying
3x + -2.1 = 8.4

Reorder the terms:
-2.1 + 3x = 8.4

Solving
-2.1 + 3x = 8.4

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 + 3x = 8.4 + 2.1

Combine like terms: -2.1 + 2.1 = 0.0
0.0 + 3x = 8.4 + 2.1
3x = 8.4 + 2.1

Combine like terms: 8.4 + 2.1 = 10.5
3x = 10.5

Divide each side by '3'.
x = 3.5

Simplifying
x = 3.5

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