Consider the given equations:
(Equation 1)
(Equation 2)
(Equation 3)
Adding equations 1 and 3, we get


So, we get
(Equation 4)
Multiplying equation 3 by '6', we get
(Equation 5)
Subtracting equation 5 from equation 2, we get


(Equation 6)
Multiplying equation 4 by '21' and adding it to equation 6, we get


So, z = -5
Since,

So, y=-5
Now,

So, x = -4
Therefore, x = -4, y= -5 and z= -5 are the solutions to the given equations.
Well, what I’d do is just see who has the most which is Bill and then for the other question I’d just subtract 7.8 - 7.2 which is equal 6 so the pH is greater by .6
Answer:
4400 is the answer
Step-by-step explanation: You move the decimal point to the right 3 spaces. If it was 10^-3 you would move the decimal point to the left 3 spaces.
The answer is 8x I believe
Answer:
-2x+y=12
Step-by-step explanation:
linear equation