Answer:
Explanation:
First I would begin by dividing both sides by 4
4(x+y) = 48 4/4 = 1 48/4 = 12
x + y = 12
next I'm going to assume this is needed in y = mx+b format so I will solve for y by subtracting the x:
y = -x + 12
this line has a slope of -1 and has a y-intercept at 12.