2(r+5)=4r

Solution for 2(r+5)=4r equation:

Simplifying
2(r + 5) = 4r

Reorder the terms:
2(5 + r) = 4r
(5 * 2 + r * 2) = 4r
(10 + 2r) = 4r

Solving
10 + 2r = 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
10 + 2r + -4r = 4r + -4r

Combine like terms: 2r + -4r = -2r
10 + -2r = 4r + -4r

Combine like terms: 4r + -4r = 0
10 + -2r = 0

Add '-10' to each side of the equation.
10 + -10 + -2r = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -2r = 0 + -10
-2r = 0 + -10

Combine like terms: 0 + -10 = -10
-2r = -10

Divide each side by '-2'.
r = 5

Simplifying
r = 5