tomarrow i have to take a quiz that determines what class i take next year in school. i have the answers to these problems but i dont know how to get all of them any help? 1. 2/3x + 1/2= 5/2 2. if 1/8 of a number is 12, then 1/4 of a number is? 3.if 3x+2=7x+5y, then x equals? 4. simplify (r2s4)^3/4 ? 5. the slope of a line x+2y=6 is? 6.simplify a/a^2-9 + 2/a+3 ?