Answer:
a = -5
Step-by-step explanation:
15 - a = 20
Move the constant of 15 to the other side by subtracting it.
-a = 5
Divide by -1 to make a positive.
a = -5
Check.
15 - (-5) = 20
15 + 5 = 20
20 = 20
Step-by-step explanation: Do You Want Me To Find All The Values ?
Answer:
−25x^2+5x−1/2
Step-by-step explanation: