Solve 5+0.1r=3(1-0.3r)

r = -2

Step-by-step explanation:

1. 5 + 0.1r = 3 (1 - 0.3r)

Remove the parenthesis. Multiply 3 by 1 (3). Multiply 3 by 0.3r (0.9r).

2. 5 + 0.1r = 3 - 0.9r

Move the terms with r together and the terms without r together.

4. 0.1r + 0.9r = 3 - 5

The like terms should be together. Do 0.1r + 0.9r (1r). Do 3 - 5 (-2)

4. 1r = -2

Remove 1 since when 1 is multiplied by a variable you'd get the variable.

5. r = -2