Answer:
The unknown number is 1.
Step-by-step explanation:
You have to form an expression. So let's make the unknown number as x. Firstly, a number is multiplied by 5 :


Secondly, 5 is added to product and you will get 10 :

Lastly, you have to solve :





Answer:

Step-by-step explanation:
we have

solve for x
Multiply in cross

Divide by 7 both sides

Adds 1 both sides


Rewrite
