The sum of two numbers is 28. the first number is 7 more than twice the second number. let a represent the first number. let b represent the second number. what is the second number? use the table to guess and check.

7

Step-by-step explanation:

We can represent this with an equation.  a+b = 28, and a = 7 + 2b.  We can substitute the second equation into the first equation to get 7 + 2b + b = 28, or  7 + 3b = 28.  Subtract 7 from both sides and we get 3b = 21.  Divide both sides by 3 and we get b = 7.  Therefore, the second number is 7.

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42