Question

The sum of two consecutive integers is 51. What are the numbers?

Answer 1

x is the 1st integer

x + 1 is the 2nd integer

x + (x+1) = 51

x + x + 1 = 51

2x + 1 = 51

subtract 1 to both sides

2x + 1 - 1 =51 -1

simplify

2x = 50

divide both sides by 2

2x/2 = 50 /2

simplify

x = 25

x + 1 = 25 +1 = 26

Answer: the numbers are 25 and 26

proof: sum of two consecutive integers is 51

25 + 26 =51

Answer 2

OK

x + x + 1 =51
2x +1 =51
2x =50
x=25

The two numbers are 25, and 26.

Hope that helps  :)