Respuesta :

Answer:

7.) x=7

8.) x=7

Step-by-step explanation:

y=15x+5

180=15x+5+70

180=15x+75

you subtract 75 from 75 which gets rid of the 75. Then you subtract 75 from 180 and you get 105.

105=15x

Then you divide 15 by 15 and that will leave you with x on that side but you also have to divide 105 by 15 which equals 7.

x=7

you do the same thing with number eight to find x.