Question

what is the product of x and y
12y + 4x= 180

Answer 1

To find each variable, substitute 0 for each one.
Start with finding y, so we add 0 in the x place.

12y + 4(0) = 180
12y + 0 = 180
Subtract 0 from both sides..
12y = 180 Divide 12 by both sides.
y = 15

Now we know y is 15, so substitute that for y and find x.
12(15) + 4x = 180
180 + 4x = 180
Subtract both sides by 180..
4x = 0 Divide both sides by 4 to get:
x = 0

Y = 15
X = 0 Does that help?