Question 30171
ok i'm not going to answer all of these but i'll teach u how to do the first one 21-y=-87+2y ok 1st u'd +87 to 21 and u get 108-y=2y then u add y to 2y and u get 108=3y then divide both sides by 3 and u get 36 do the rest of the questions that way and u'll be fine 



i hope this helped u!!