Question

X + 3y - z= -4
2x – y + 2z = 13
3x - 2y - z= -9

Answer 1

x= 0

y = 1

z = -7

Explanation:

adding all equation

then we got

5x = 0

X = 0

now putting the value of X

in ex.. 1 and 3

and after substrate

we got .....

5y = 5

y=1

so.

z= -7

.........................

plzzz..........

mark it as a brilliant answer