Question

We need help solving linearcombination method for geometry

Answer 1

3×+2y-3z=-2
7x-2y+5z=-14
2×+4y+z=6

Answer 2

you need to add multiples of equations (1) and (2) to each other to find equation (a), with two unknowns
then you need to add multiples of equations (2) and (3) to each other to find equation (b), with two unkowns, and it should be the same two unknowns as equation (a).

Then you combine multiples of equation (a) and (b) to find an equation with one unkown, which you can solve.

Then reverse the process, and you can find the value of all variables in this system of equations.

Answer 3

Do you know how to add mutliples of equations to each other?