(-1+5.3)+(7.2-9)=-6.2n

Solution for (-1+5.3)+(7.2-9)=-6.2n equation:

Simplifying
(-1 + 5.3) + (7.2 + -9) = -6.2n

Combine like terms: -1 + 5.3 = 4.3
(4.3) + (7.2 + -9) = -6.2n
4.3 + (7.2 + -9) = -6.2n

Combine like terms: 7.2 + -9 = -1.8
4.3 + (-1.8) = -6.2n
4.3 + -1.8 = -6.2n

Combine like terms: 4.3 + -1.8 = 2.5
2.5 = -6.2n

Solving
2.5 = -6.2n

Solving for variable 'n'.

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

Add '6.2n' to each side of the equation.
2.5 + 6.2n = -6.2n + 6.2n

Combine like terms: -6.2n + 6.2n = 0.0
2.5 + 6.2n = 0.0

Add '-2.5' to each side of the equation.
2.5 + -2.5 + 6.2n = 0.0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 6.2n = 0.0 + -2.5
6.2n = 0.0 + -2.5

Combine like terms: 0.0 + -2.5 = -2.5
6.2n = -2.5

Divide each side by '6.2'.
n = -0.4032258065

Simplifying
n = -0.4032258065