Question

2x+y=10, x-y=-1,x-z=2,x+y+z=8 find value x, y, z​

Answer 1

Answer:x =3 y= 4 z= 1

Step-by-step explanation:

Solve2x+y=10and x-y=-1

We get x =3

Now substitute x value in either equation 1 or 2 we get y value

We get y=4

Now substitute x and y values in 3rd equation inorder to get z value

From this we get z =1

Answer 2

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x = 3

y = 4

z = 1

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step-by-step explanation:

Given equations,

2x + y = 10 ...........(i)

x - y = -1 ...............(ii)

x - z = 2 .............(iii)

x + y +z = 8 .........(iv)

.adding eqn (i) and (ii),

we get,..

3x = 9

=> x = 9/3

=> x = 3

now,

putting the value of x in eqn (ii),

we get,

-y = -1 - 3

=> y = 1+3

=> y = 4

again,

putting the value of x in eqn (iii),

we get,

-z = 2 -3

=> z = 3- 2

=> z = 1

Hence,

x = 3

y = 4

z = 1