4r+0.3=9r-0.15

Solution for 4r+0.3=9r-0.15 equation:

Simplifying
4r + 0.3 = 9r + -0.15

Reorder the terms:
0.3 + 4r = 9r + -0.15

Reorder the terms:
0.3 + 4r = -0.15 + 9r

Solving
0.3 + 4r = -0.15 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
0.3 + 4r + -9r = -0.15 + 9r + -9r

Combine like terms: 4r + -9r = -5r
0.3 + -5r = -0.15 + 9r + -9r

Combine like terms: 9r + -9r = 0
0.3 + -5r = -0.15 + 0
0.3 + -5r = -0.15

Add '-0.3' to each side of the equation.
0.3 + -0.3 + -5r = -0.15 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + -5r = -0.15 + -0.3
-5r = -0.15 + -0.3

Combine like terms: -0.15 + -0.3 = -0.45
-5r = -0.45

Divide each side by '-5'.
r = 0.09

Simplifying
r = 0.09