2x-12=x^2+x another question is 3.5x=20-2.5x

1) No solution

2x-12=x^2+x

Subtract -2x from both sides.

-12=x^2-x

Add 12 to both sides.

0=x^2-x+12

If you were to do the umbrella method there is no other way to simplify this expression.

2) 10/3

3.5x=20-2.5x

Add 2.5x to both sides.

6x=20

Divide 6 to both sides.

10/3=x

1. Has no soultion.

2. x-10/3

Hope that help!!!

(Ps. Let me know if you need the work to prove this.)

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!