3y 10x =- 5 July 8, 2019 16 32 64 128 3y 10x 5x 6y 7 8 10x 3y 75 6x 5y 11 by elimination method 10x 3y 75 6x 5y 11 by substitution method 10x 3y 5 x y 4 10x 3y 5xy 2 20xy 10x 3y 5 3 2xy '= 10x 3y 5 y 8x 3y =- 5 10x 6y =- 13 10x 3y =- 0 5
