3x+2.1=0

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Solution for 3x+2.1=0 equation: 


Simplifying
3x + 2.1 = 0

Reorder the terms:
2.1 + 3x = 0

Solving
2.1 + 3x = 0

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 = 0 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + 3x = 0 + -2.1
3x = 0 + -2.1

Combine like terms: 0 + -2.1 = -2.1
3x = -2.1

Divide each side by '3'.
x = -0.7

Simplifying
x = -0.7

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