2(r-9)=-38

Solution for 2(r-9)=-38 equation:

Simplifying
2(r + -9) = -38

Reorder the terms:
2(-9 + r) = -38
(-9 * 2 + r * 2) = -38
(-18 + 2r) = -38

Solving
-18 + 2r = -38

Solving for variable 'r'.

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

Add '18' to each side of the equation.
-18 + 18 + 2r = -38 + 18

Combine like terms: -18 + 18 = 0
0 + 2r = -38 + 18
2r = -38 + 18

Combine like terms: -38 + 18 = -20
2r = -20

Divide each side by '2'.
r = -10

Simplifying
r = -10