Okay lets see 81^1/3 means that you are multiplying by a third. but you can also turn it into a division problem as simple as putting 81 in the place of the 1. Now the problem looks like this: 81/3. so if you divide 81 by 3 you get 27. check the ,mat by doing it backwards. multiply 27 by 3 and see what you get. it should be 81.
To find value of y in times o x we have to transfrom this equation. LEts do this x-0.25y=1.5 /-x subtract x both sides -0.25y=1.5-x /*4 multiply by 4 both sides -0.25y*4=4(1.5-x) -1y=6-4x /*-1 multiply both sides by -1 y=4x-6
