.40(n+3)=4

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Solution for .40(n+3)=4 equation: 


Simplifying
0.40(n + 3) = 4

Reorder the terms:
0.40(3 + n) = 4
(3 * 0.40 + n * 0.40) = 4
(1.2 + 0.40n) = 4

Solving
1.2 + 0.40n = 4

Solving for variable 'n'.

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

Add '-1.2' to each side of the equation.
1.2 + -1.2 + 0.40n = 4 + -1.2

Combine like terms: 1.2 + -1.2 = 0.0
0.0 + 0.40n = 4 + -1.2
0.40n = 4 + -1.2

Combine like terms: 4 + -1.2 = 2.8
0.40n = 2.8

Divide each side by '0.40'.
n = 7

Simplifying
n = 7

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