Solve the following equation
3r+90=5r
Solve for r
3r + 90 = 5r
Group our variables 3r and 5r
subtract 5r from both sides
3r + 90 - 5r = 5r - 5r
-2r + 90 = 0
3r | |
3 |
= |
90 |
3 |
Group our constants 90 and 0.
subtract 90 from both sides
-2r + 90 - 90 = 0 - 90
-2r = -90
-2r | |
-2 |
= |
-90 |
-2 |
r = 45