9.9 plus 7.7 times a number equals the sum of the number and 92.2

Question

9.9 plus 7.7 times a number equals the sum of the number and 92.2

Answer 1

Hello Jack

 

Let x = the number.  Let's break down the question into fragments and figure out the equations.

 

9.9 plus 7.7 times a number ==> 9.9 + 7.7x

 

equals the sum of the number and 92.2  ==>  ... = x + 92.2

 

Now put the 2 fragments together, you get the following equation:

 

9.9 + 7.7x = x + 92.2

 

7.7x - x = 92.2 - 9.7

 

6.7x = 82.5

 

x = 82.5 / 6.7 = 12.3