-3(2r+9)-4(r+8)=

Solution for -3(2r+9)-4(r+8)= equation:

Simplifying
-3(2r + 9) + -4(r + 8) = 0

Reorder the terms:
-3(9 + 2r) + -4(r + 8) = 0
(9 * -3 + 2r * -3) + -4(r + 8) = 0
(-27 + -6r) + -4(r + 8) = 0

Reorder the terms:
-27 + -6r + -4(8 + r) = 0
-27 + -6r + (8 * -4 + r * -4) = 0
-27 + -6r + (-32 + -4r) = 0

Reorder the terms:
-27 + -32 + -6r + -4r = 0

Combine like terms: -27 + -32 = -59
-59 + -6r + -4r = 0

Combine like terms: -6r + -4r = -10r
-59 + -10r = 0

Solving
-59 + -10r = 0

Solving for variable 'r'.

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

Add '59' to each side of the equation.
-59 + 59 + -10r = 0 + 59

Combine like terms: -59 + 59 = 0
0 + -10r = 0 + 59
-10r = 0 + 59

Combine like terms: 0 + 59 = 59
-10r = 59

Divide each side by '-10'.
r = -5.9

Simplifying
r = -5.9