-99=-3(-7x-2)

Solution for -99=-3(-7x-2) equation:

Simplifying
-99 = -3(-7x + -2)

Reorder the terms:
-99 = -3(-2 + -7x)
-99 = (-2 * -3 + -7x * -3)
-99 = (6 + 21x)

Solving
-99 = 6 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
-99 + -21x = 6 + 21x + -21x

Combine like terms: 21x + -21x = 0
-99 + -21x = 6 + 0
-99 + -21x = 6

Add '99' to each side of the equation.
-99 + 99 + -21x = 6 + 99

Combine like terms: -99 + 99 = 0
0 + -21x = 6 + 99
-21x = 6 + 99

Combine like terms: 6 + 99 = 105
-21x = 105

Divide each side by '-21'.
x = -5

Simplifying
x = -5