Question 160365
looking at the values of the coefficients (numbers), the numbers for the z terms seem the easiest for eliminating


multiply 3rd eqn by 3, add to 2nd eqn __ -46x+34y=-2430 __ -23x+17y=1215
__  multiplying by 41 __ -943x+697y=-49815 __ (A)


multiply 3rd eqn by 4, subtract from 1st eqn __ 44x-41y=2460
__ multiplying by 17 __ 748x-697y=41820 __ (B)


adding eqns (A) and (B) __ -195x=-7995 __ x=41


substituting __  44(41)-41y=2460 __ y=-16


substituting __ -4(41)-5(-16)-8z=268 __ z=-44