The least common multiple is 32
M = -8
-15 minus -7 equals -8
for a line in the form of y=mx+b, the slope is m and he y intercept is b.
y= -3/4x + 3/2m = -3/4, b=3/2
Explain more are you trying to figure out how much the 8s are worth in the number
200 * 0.15 = $30 off
200-30 = $170
Nancy must pay $170
