Question

Solve the system of equations.
3x+3y+6z=6
3x+2y+4z=5
7x+3y+3z=7

Answer 1

answer : c ( x = 1 , y = -1 , z = 1)

Explanation:

put x = 1 , y = -1 , z = 1

in this equations :

3(1)+3(-1)+6(1)=6 ........ 6=6 right

3(1)+2(-1)+4(1)=5 .....5=5 right

7(1)+3(-1)+3(1)=7......7=7 right