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2 years ago

Hello anyone to help

Mathematics

2 answers:

Murljashka [212]2 years ago

4 0

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

lora16 [44]2 years ago

4 0

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:

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Hello anyone to help ​

Hello anyone to help