3(n-7)=-20

Solution for 3(n-7)=-20 equation:

Simplifying
3(n + -7) = -20

Reorder the terms:
3(-7 + n) = -20
(-7 * 3 + n * 3) = -20
(-21 + 3n) = -20

Solving
-21 + 3n = -20

Solving for variable 'n'.

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

Add '21' to each side of the equation.
-21 + 21 + 3n = -20 + 21

Combine like terms: -21 + 21 = 0
0 + 3n = -20 + 21
3n = -20 + 21

Combine like terms: -20 + 21 = 1
3n = 1

Divide each side by '3'.
n = 0.3333333333

Simplifying
n = 0.3333333333