You have to get "X" by itself so you subtract 12, 7-12 is -5 so "X" = - 5
Answer:
You must divide
by 
Step-by-step explanation:
we have

Step 1
Solve for x


Step 2
Find the value of y

Substitute the value of x


therefore
You must divide
by 
Answer:
-2,9
Step-by-step explanation:
Dont want to explain too long
Answer:
2,600,000
Step-by-step explanation:
To determine the number of license plate that can be made with one letter and 5 digits;
Number of English alphabet = 26
Number of digits from 0 to 9 = 10
Each letter have 26 possible options and each digit have 10 possible options.
Number of license plate that can be made is;
N = 26 × 10^5
N = 2600000
5 boxes of pens
4 boxes of pencils