A linear system of three equations with three variables is any system that can be ... i) can be zero as long as each equation has at least one variable (x,y or z) in it. ... A solution to a system of equations are values of x, y and z such that, when ... x+y+z=4;4x+1/2y-3z=30;-2x-6y+5z=-7 · c+2d+3e=−13;3c+2d-e=-1;2c-d+2e=-4 Step-by-step explanation:
