To solve for a, combine all terms with variables on the left side of the equation, and all constants on the right side of equation.
Note that when we transpose a term to the other side, its sign becomes the opposite:
12a - 11 = 9a - 1
12a - 9a = 11 - 1
3a = 10
To get a, divide everything by the numerical coefficient of a (or the number before the variable a, which is 3):
a = 10/3
I'm not Reiny but I hope you could trust my answer. Hope this helps~ :3
12a - 11 = 9a - 1?
1 answer