3.1(r+1)+4.2r=

Solution for 3.1(r+1)+4.2r= equation:

Simplifying
3.1(r + 1) + 4.2r = 0

Reorder the terms:
3.1(1 + r) + 4.2r = 0
(1 * 3.1 + r * 3.1) + 4.2r = 0
(3.1 + 3.1r) + 4.2r = 0

Combine like terms: 3.1r + 4.2r = 7.3r
3.1 + 7.3r = 0

Solving
3.1 + 7.3r = 0

Solving for variable 'r'.

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

Add '-3.1' to each side of the equation.
3.1 + -3.1 + 7.3r = 0 + -3.1

Combine like terms: 3.1 + -3.1 = 0.0
0.0 + 7.3r = 0 + -3.1
7.3r = 0 + -3.1

Combine like terms: 0 + -3.1 = -3.1
7.3r = -3.1

Divide each side by '7.3'.
r = -0.4246575342

Simplifying
r = -0.4246575342