Answer:
a = -17/30
Step-by-step explanation:
So the first step is to distribute the negative sign, if that's a bit confusing think of the negative sign as a -1 instead of just a negative sign, and then think of distributing that negative 1 to the 23a and -13.
Original Equation:
-(23a - 13) + 53a
Distribute negative sign
-23a + 13 + 53a
Group like terms:
(-23a + 53a) + 13
Simplify
30a + 13 = -4
Subtract 13 from both sides
30a = -17
Divide both sides by 30
a = -17/30
