Question

___x+y+z=7 ; 2x+2y+z=4 ; -3x-2y+z=-4​___

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Answer 1

Answer:

We have,

2x−y=4 ..(i)

y−z=6 ..(ii)

x−z=10 ..(iii)

From equation (iii), we get z=x−10

Substituting the value of z in equation (ii), we get

y−(x−10)=6

⇒−x+y=−4 ...(iv)

Adding equations (i) and (iv), we get

x=0

Putting x=0 equation in (i) and (iii) we get

y=−4 and z=−10

Hence, x=0,y=−4,z=−10 is the solution of the given system of equations.

Step-by-step explanation:

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