-r-2s+3t=3

Solution for -r-2s+3t=3 equation:

Simplifying
-1r + -2s + 3t = 3

Solving
-1r + -2s + 3t = 3

Solving for variable 'r'.

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

Add '2s' to each side of the equation.
-1r + -2s + 2s + 3t = 3 + 2s

Combine like terms: -2s + 2s = 0
-1r + 0 + 3t = 3 + 2s
-1r + 3t = 3 + 2s

Add '-3t' to each side of the equation.
-1r + 3t + -3t = 3 + 2s + -3t

Combine like terms: 3t + -3t = 0
-1r + 0 = 3 + 2s + -3t
-1r = 3 + 2s + -3t

Divide each side by '-1'.
r = -3 + -2s + 3t

Simplifying
r = -3 + -2s + 3t