Step-by-step explanation:
x=y+9
substitute
3(y+9)+8y=-6
3y+27+8y= -6
13y = -6 -27
13y= -33
y = -33/13
x = -33/13 + 9
Answer:
divide
Step-by-step explanation:
Answer:
Ill try to help u atleast but if i cant i can explain to u
Step-by-step explanation:
Answer: 
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below;
- Make the equation equal to zero:

-Add 49 at both sides:

- Now, you must take the square root of both sides of the equation, then you obtain the following roots:

- Then you have:


Answer:
I'm not sure but I think 8