Question

Hello anyone to help ​

Answer 1

Answer: You bought 7 books and you also bought 4 magazines

Explanation:

x = # of books purchased

y = # of magazines purchased

System of equations:

8x + 5y = 76
x + y = 11

Let’s use elimination in this case, but substitution can also work.

8x + 5y = 76
Multiply the (x + y = 11) by -8

We get:

8x + 5y = 76
-8x - 8y = -88
The xs cancel.
Add like terms.
-3y = -12
Divide by -3 on both sides
y = 4

Now plug in 4 into the (x + y = 11) equation to get x.

x + (4) = 11
Subtract 4 on both sides
x = 7

Answer 2

Answer:

b+m = 11  

8b + 5m = 76  

 b = 11-m  

substitute  

  8(11-m)+5m = 76  

   88 - 8m + 5m = 76  

    12 = 3m  

   4 = m    7 = b  

check  

  4*5 + 7*8 ?=? 76  

  20 + 56 = 76    the answer is correct.

Step-by-step explanation: