4r+9+r+2s-3=

Solution for 4r+9+r+2s-3= equation:

Simplifying
4r + 9 + r + 2s + -3 = 0

Reorder the terms:
9 + -3 + 4r + r + 2s = 0

Combine like terms: 9 + -3 = 6
6 + 4r + r + 2s = 0

Combine like terms: 4r + r = 5r
6 + 5r + 2s = 0

Solving
6 + 5r + 2s = 0

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 + 5r + -6 + 2s = 0 + -6

Reorder the terms:
6 + -6 + 5r + 2s = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 5r + 2s = 0 + -6
5r + 2s = 0 + -6

Combine like terms: 0 + -6 = -6
5r + 2s = -6

Add '-2s' to each side of the equation.
5r + 2s + -2s = -6 + -2s

Combine like terms: 2s + -2s = 0
5r + 0 = -6 + -2s
5r = -6 + -2s

Divide each side by '5'.
r = -1.2 + -0.4s

Simplifying
r = -1.2 + -0.4s