1.(5x+2x)=7x 7x*14=294 98x=294 x=3 2.(12y-5y)/4=21 7y/4=21 1.25y=21 y=12 3. (19x+6x)/35=5 25x/35=5 25x=175 x=7 4.234(21y-8y) = 3 234*13y=3 13y= 78 y= 6