66=6(-1+3x)

Solution for 66=6(-1+3x) equation:

Simplifying
66 = 6(-1 + 3x)
66 = (-1 * 6 + 3x * 6)
66 = (-6 + 18x)

Solving
66 = -6 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
66 + -18x = -6 + 18x + -18x

Combine like terms: 18x + -18x = 0
66 + -18x = -6 + 0
66 + -18x = -6

Add '-66' to each side of the equation.
66 + -66 + -18x = -6 + -66

Combine like terms: 66 + -66 = 0
0 + -18x = -6 + -66
-18x = -6 + -66

Combine like terms: -6 + -66 = -72
-18x = -72

Divide each side by '-18'.
x = 4

Simplifying
x = 4