Question

Pls ans this asap
Solve the following system of linear equations using inversion method.
2x+y+z=8
5x-3y+22=3
7x+y+3z=20

Answer 1

Answer:

Step-by-step explanation:

From first equation

z = 8-2x-y

Substituting it in third equation gives

7x+y+3(8-2x-y) = 20

7x+y+24-6x-3y = 20

x-2y = -4

x=2y-4

Substituting in second equation gives

5(2y-4) - 3y = -19

10y-20-3y=-19

7y = 1

y = 1/7

Rest you can substitute and find..