Y - 11 = 3(x + 4)....distribute thru the parenthesis
y - 11 = 3x + 12....add 11 to both sides
y = 3x + 12 + 11...simplify
y = 3x + 23 <==
3(-2) -(1) -3(-2)
= -6 -1 +6 = -1
5/3
if you divide both numbers by 8 you will reduce them to their simplest form
They have sold ten full cases
but have sold 10 and a half cases in total
4/15=x/75
4*75=15*x
300=15x
x=300/15
x=20