Question

Resolva os seguinte sistema linear

Answer 1

3x+5y=1

2x+z=3

5x+y-z=0

z=5x+y

2x+5x+y=3

7x+y=3

3x+5y=1

y=3-7x

3x+5(3-7x)=1

3x+15-35x=1

-32x=-14

x=14/32

________

x=7/16

y=-1/16

z=17/8

________