Answer:
x = -9, y = 6.
Step-by-step explanation:
-x + y = 15
-5x - 3y = 27
From the first equation:
y = x + 15.
Substituting for y in second equation:
-5x - 3(x + 15) = 27
-8x - 45 = 27
-8x = 72
x = -9.
Now plug x = -9 into equation 1
-(-9) + y = 15
y = 15 -9 = 6.
905 whatever that is (I forgot)
Answer:
sorry but the question won't load i would love to help though
Step-by-step explanation:
18.75÷5=3.75
12.75÷3=4.2
The pack of 5 books has the lower cost per book
The answer to the problem is x=7. Here is the work:
