Answer:
you gotta find a common ground.
Step-by-step explanation:
easiest way to make friends is to relate to people with experiences you share together :)
equation : c=£1.25 for example to find out 3 cans : 3c= £1.25x3
The value of x, y and z from the system of equation are -1, -8 and 5 respectively.
Data;
- -2x + 6y + 3z = -31
- -3y + 7z = 59
- 2z = 10
<h3>System of Equation</h3>
To solve this problem, we have to solve the system of equation using substitution method.
From equation (iii)
![2z = 10\\z = 5](https://tex.z-dn.net/?f=2z%20%3D%2010%5C%5Cz%20%3D%205)
let us substitute the value of z into equation (ii)
![-3y + 7z = 59\\z = 5\\-3y + 7(5) = 59\\-3y + 35 = 59\\-3y = 59 - 35\\-3y = 24\\y = -8](https://tex.z-dn.net/?f=-3y%20%2B%207z%20%3D%2059%5C%5Cz%20%3D%205%5C%5C-3y%20%2B%207%285%29%20%3D%2059%5C%5C-3y%20%2B%2035%20%3D%2059%5C%5C-3y%20%3D%2059%20-%2035%5C%5C-3y%20%3D%2024%5C%5Cy%20%3D%20-8)
Let's substitute the value of x and y into equation (i)
![-2x + 6y + 3z = -31\\y = -8, z = 5\\-2x + 6(-8) + 3(5) = -31\\-2x - 48 + 15 = -31\\-2x - 33 = -31\\-2x = -31 + 33\\-2x = 2\\x = -1](https://tex.z-dn.net/?f=-2x%20%2B%206y%20%2B%203z%20%3D%20-31%5C%5Cy%20%3D%20-8%2C%20z%20%3D%205%5C%5C-2x%20%2B%206%28-8%29%20%2B%203%285%29%20%3D%20-31%5C%5C-2x%20-%2048%20%2B%2015%20%3D%20-31%5C%5C-2x%20-%2033%20%3D%20-31%5C%5C-2x%20%3D%20-31%20%2B%2033%5C%5C-2x%20%3D%202%5C%5Cx%20%3D%20-1)
From the calculation above, the value of x, y and z are -1, -8 and 5 respectively.
Learn more on system of equations here;
brainly.com/question/14323743
7/k - 2 = 5/8
7/k = 5/8 + 2
7/k = 2.625
7 = 2.625k
7/2.625 = 2.625k/2.625
2(2/3) = k
k = 2(2/3)