2x
so...
2x (4t - 2 - 9)
2x (4t - 11)
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:

Step-by-step explanation:
Hello,
First of all we need to take x different from 3 as dividing by 0 is not allowed
then for x real different from 3

hope this helps
Answer:
2x^2+13x-10
Step-by-step explanation:
6 more gallons, I don’t know how it’ll be as an inequality though, maybe. 40x/4= 24x/4=6 ?
Answer:
Step-by-step explanation:
You need to set up a proportion.
(21 - 15) / 21 = 4/(x + 4)
6 / 21 = 4/(x + 4)
2/7 = 4/(x + 4)
2(x + 4) = 7*4
2x + 8 = 28
2x + 8-8= 28 - 8
2x = 20
x = 20/2
x = 10