Respuesta :
Move b to the left.
-3b+p=10a
Divide all terms by 10
-3/10b + 1/10p= a
Rearrange
a= -3/10b + 1/10p
-3b+p=10a
Divide all terms by 10
-3/10b + 1/10p= a
Rearrange
a= -3/10b + 1/10p