l r+r+0.45=1.25
Enter Equation or Inequality

Solve the following equation

r+r+0.45=1.25

Solve for r

r + r + 0.45 = 1.25

Group the r terms on the left:

(1 + 1)r = 2r

Form modified equation

2r + 0.45 = + 1.25

Group constants

Group our constants 0.45 and 1.25.
subtract 0.45 from both sides

2r + 0.45 - 0.45 = 1.25 - 0.45

Cancel 0.45 on the left side:

2r = 0.8

Divide each side of the equation by 2

2r
2
=
  
0.8
2

r = 0.4

Final Answer


r = 0.4