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

x= 0

y = 1

z = -7

Step-by-step 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

ddsf

step-by-step explanation:

dfs

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10