90=-6(2n+1)

Solution for 90=-6(2n+1) equation:

Simplifying
90 = -6(2n + 1)

Reorder the terms:
90 = -6(1 + 2n)
90 = (1 * -6 + 2n * -6)
90 = (-6 + -12n)

Solving
90 = -6 + -12n

Solving for variable 'n'.

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

Add '12n' to each side of the equation.
90 + 12n = -6 + -12n + 12n

Combine like terms: -12n + 12n = 0
90 + 12n = -6 + 0
90 + 12n = -6

Add '-90' to each side of the equation.
90 + -90 + 12n = -6 + -90

Combine like terms: 90 + -90 = 0
0 + 12n = -6 + -90
12n = -6 + -90

Combine like terms: -6 + -90 = -96
12n = -96

Divide each side by '12'.
n = -8

Simplifying
n = -8