-n+0.4n+1.8=-3

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Solution for -n+0.4n+1.8=-3 equation: 


Simplifying
-1n + 0.4n + 1.8 = -3

Reorder the terms:
1.8 + -1n + 0.4n = -3

Combine like terms: -1n + 0.4n = -0.6n
1.8 + -0.6n = -3

Solving
1.8 + -0.6n = -3

Solving for variable 'n'.

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

Add '-1.8' to each side of the equation.
1.8 + -1.8 + -0.6n = -3 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + -0.6n = -3 + -1.8
-0.6n = -3 + -1.8

Combine like terms: -3 + -1.8 = -4.8
-0.6n = -4.8

Divide each side by '-0.6'.
n = 8

Simplifying
n = 8

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