kamdynj1 kamdynj1

01-03-2022
Mathematics

contestada

Solve the system of equations:
x-y=4
4x-7z=24
4y+z=8

Respuesta :

Medunno13 Medunno13

06-03-2022

Answer: x=6, y=2, z=0

Step-by-step explanation:

We know from the third equation that z=8-4y

and from the first that x=y+4

Substitute into the 2nd equation,

4(y+4)-7(8-4y)=24

4y+16-56+28y=24

32y-40=24

32y=64

y=2

Meaning x=6 and z=0.

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