6+4(-6r-3)=-78

Solution for 6+4(-6r-3)=-78 equation:

Simplifying
6 + 4(-6r + -3) = -78

Reorder the terms:
6 + 4(-3 + -6r) = -78
6 + (-3 * 4 + -6r * 4) = -78
6 + (-12 + -24r) = -78

Combine like terms: 6 + -12 = -6
-6 + -24r = -78

Solving
-6 + -24r = -78

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + -24r = -78 + 6

Combine like terms: -6 + 6 = 0
0 + -24r = -78 + 6
-24r = -78 + 6

Combine like terms: -78 + 6 = -72
-24r = -72

Divide each side by '-24'.
r = 3

Simplifying
r = 3