3+9r=10r

Solution for 3+9r=10r equation:

Simplifying
3 + 9r = 10r

Solving
3 + 9r = 10r

Solving for variable 'r'.

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

Add '-10r' to each side of the equation.
3 + 9r + -10r = 10r + -10r

Combine like terms: 9r + -10r = -1r
3 + -1r = 10r + -10r

Combine like terms: 10r + -10r = 0
3 + -1r = 0

Add '-3' to each side of the equation.
3 + -3 + -1r = 0 + -3

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

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

Divide each side by '-1'.
r = 3

Simplifying
r = 3