-3(2x+1)=-57

Solution for -3(2x+1)=-57 equation:

Simplifying
-3(2x + 1) = -57

Reorder the terms:
-3(1 + 2x) = -57
(1 * -3 + 2x * -3) = -57
(-3 + -6x) = -57

Solving
-3 + -6x = -57

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + -6x = -57 + 3

Combine like terms: -3 + 3 = 0
0 + -6x = -57 + 3
-6x = -57 + 3

Combine like terms: -57 + 3 = -54
-6x = -54

Divide each side by '-6'.
x = 9

Simplifying
x = 9