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
Value of 5(d–2) is 45.
Option C is correct.
Step-by-step explanation:
We are given 3(d+1)=4(d–2) and we need to find the value of 5(d–2)
First we will solve 3(d+1)=4(d–2) to find value of d:
Solving:

So, value of d = 11
Now putting value of d in 5(d–2) and finding its value:

So, value of 5(d–2) is 45.
Option C is correct.
Keywords: Solving Equations
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C! Diya is correct Leo's fraction gives 19.4