mitskifan01 mitskifan01 08-01-2023 Mathematics contestada use substitution to solve each system of equations 2. y= 4x+5 2x+y=17 6. 3x +4y= -3 x+2y= -1 8. -1=2x - y 8x-4y=-4 10. y= -4x + 11 3x + y=9 15. -5x+4y=20 10x-8y= -40