7-.4n=-1

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Solution for 7-.4n=-1 equation: 


Simplifying
7 + -0.4n = -1

Solving
7 + -0.4n = -1

Solving for variable 'n'.

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

Add '-7' to each side of the equation.
7 + -7 + -0.4n = -1 + -7

Combine like terms: 7 + -7 = 0
0 + -0.4n = -1 + -7
-0.4n = -1 + -7

Combine like terms: -1 + -7 = -8
-0.4n = -8

Divide each side by '-0.4'.
n = 20

Simplifying
n = 20

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