15a =6a - 90
Move all the numbers with variables to one side
15a - (6a) = 6a -(6a) -90
9a = -90
9a/9 = -90/9
a = -9
Hope this helps
Price after off =80- 1/4 * 80 = 80-20 = $60
Coupon discount = 60*10/100 = $6
So, he have to pay, 60-6 = $54
Y=1x-7 is the equation and -7 is the value of B
Answer:
the answer is d
Step-by-step explanation:
answers are shown
If degree of variable is one then eq. is linear
so given is linear.