34werydfgbrdtdcfhv 34werydfgbrdtdcfhv 22-11-2021 Mathematics contestada Solve the system of equations. 1. 2x - 6y = 8 -3x + 9y = 12 2. 6x - 8y = 10 -15x + 20y = -20 3. 6x = 9 - 3y 4y = 12 - 8x