1) 13.02-6y=8y +6y=6y 13.02=14y then divide both sides by 14. you get y= .93 2) 1/5x+5=19-1/2x -5=-5 (1/5x=14-1/2x)5 x=70-2.5x +2.5x=+2.5x 3.5x=70 divide both sides by 3.5 and you get x=20 3) 7.3t+22=2.1t-22.2 -2.1t =-2.1t 5.2t+22=22.2 -22=-22 5.2t=-44.2 divide both by 5.2 and t=-8.5 4) (1.4+2/5e=3/15e-.8)15 21+6e=3e-12 -3e=-3e 21+3e=-12 -21 =-21 3e=-33 divide both by 3 and e=-11 5) 5(x-4)=2(2x+5) 5x-20=4x+10 -4x -4x x-20=10 +20=+20 x=30 6) -7(3+t)=4(2t+6) -21-7t=8t+24 +7t=+7t -21=15t+24 -24= -24 -45=15t divide both by 15 and t=-3 7) (3/4x+6=1/3x+9)4 3x+24=1.3x+36 -1.3x =-1.3x 1.7x+24=36 -24=-24 1.7x =12 divide both sides by 1.7 and x=7.06
The correct answer for this question is that the unit rate is 5:1. We
can work this out by simplifying down the 2 commercials to every 10
songs ration, so that 10:2 becomes 5:1. We can work this out by halving
the original ratio to simplify it.
