Question

The sum of two numbers is 40. The second number is 5 less than twice the first number. Let x represent the first number and let y represent the second number. What is the value of the first number? Use the table to guess and check.
Numbers
x
y
x + y = 40
y = 2 x minus 5





15
20
25
30

Answer 1

Answer:

15

Explanation:

The sum of two numbers is 40. The second number is 5 less than twice the first number. Let x represent the first number and let y represent the second number. What is the value of the first number? Use the table to guess and check.

Numbers

x

y

x + y = 40

y = 2 x minus 5

     

     

     

     

   

15

20

25

30

Answer 2

Answer: 15

Explanation:

x+2x-5=40

3x-5=40

3x=45

x=15