4r-15=-6+r

Solution for 4r-15=-6+r equation:

Simplifying
4r + -15 = -6 + r

Reorder the terms:
-15 + 4r = -6 + r

Solving
-15 + 4r = -6 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-15 + 4r + -1r = -6 + r + -1r

Combine like terms: 4r + -1r = 3r
-15 + 3r = -6 + r + -1r

Combine like terms: r + -1r = 0
-15 + 3r = -6 + 0
-15 + 3r = -6

Add '15' to each side of the equation.
-15 + 15 + 3r = -6 + 15

Combine like terms: -15 + 15 = 0
0 + 3r = -6 + 15
3r = -6 + 15

Combine like terms: -6 + 15 = 9
3r = 9

Divide each side by '3'.
r = 3

Simplifying
r = 3