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
a = 10
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