What is the solution to the system of equations shown below? 2x + 5y + 3z = 10 3x ­ - y + 4z = 8 5x - ­ 2y + 7z = 12 a) (7, 1, ­-3) b) (7, ­-1, ­-3) c) (7, 1, 3) d) (­-7, 1, -­3)

X = 7

Y = 1

Z = -3

Step-by-step explanation:

I typed the three equations into a fancy calculator aka ma th wa y separated by commas and hit enter.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

what are ur choices?