Practice problem
Solve the system of equations using substitution. x−4y+2z=10x-4y+2z=10x−4y+2z=10 6x+6y−6z=186x+6y-6z=186x+6y−6z=18 z−x−12y=30z-x-12y=30z−x−12y=30
x=−103x=-\frac{10}{3}x=−310 , y=3y=3y=3 , z=−83z=-\frac{8}{3}z=−38
x=310x=\frac{3}{10}x=103 , y=−3y=-3y=−3 , z=−83z=-\frac{8}{3}z=−38
x=73x=\frac{7}{3}x=37 , y=−13y=-\frac{1}{3}y=−31 , z=53z=\frac{5}{3}z=35
x=103x=\frac{10}{3}x=310 , y=−3y=-3y=−3 , z=−83z=-\frac{8}{3}z=−38
Type a concept, like “slope” or “photosynthesis”.
