Solve the following equation
a+20=3a
Solve for a
a + 20 = 3a
Group our variables a and 3a
subtract 3a from both sides
a + 20 - 3a = 3a - 3a
-2a + 20 = 0
Group our constants 20 and 0.
subtract 20 from both sides
-2a + 20 - 20 = 0 - 20
-2a = -20
-2a | |
-2 |
= |
-20 |
-2 |
a = 10