Multiply me by 7. then subtract 17.if you subtract 10 and then add 5 you get 20. what number am i ?

You number is 6

Step-by-step explanation:

Let x = number

Multiply me by 7

7x

then subtract 17

7x-17

if you subtract 10

7x - 17-10

7x - 27

then add 5

7x -27 +5

7x -22

you get 20

7x -22= 20

Add 22 to each side

7x -22+22=20+22

7x=42

Divide by 7

7x/7 = 42/7

x =6

step-by-step explanation:

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well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation: