1. (12x -5y)/3x = 2/3 3(12x-5y) = 6x 36x - 15y = 6x 30x = 15y y = 2x
x/y = x/2x = 1/2 (x² +2x² )/ 4x² = 3x² /4x² = 3/4
2. a) 2(x-1)/3 = 7/3 - 1/(3/2) 2(x-1)/3 = 7/3 - 2/3 2(x-1) = 4 x-1 = 2 x =3
b) (2x+1)/ (4x+3) = 1/3
3(2x+1) = 4x+3 6x+3 = 4x+3 2x = 0 x = 0