Sum of two consecutive odd numbers is 128

Question

The sum of two consecutive odd numbers is 128

Answer 1

the sum of two consecutive odd numbers is 128

128/2=64

64-1=63

64+1=65

63+65=128

if you are in a higher level of math...

x and x+2 are the numbers

x+x+2=128

2x=126

x=63

x+2=65

Answer 2

here's what we know:

a + b = 128 (two numbers add up to 128)

b = a + 2 (the second number, being the consecutive odd number, is going to be 2 larger than the first)

 

We have a value, so let's plug it in:

a + a + 2 = 128

2a + 2 = 128

Subtract 2 from both sides:

2a + 2 - 2 = 128 - 2

2a = 126

 

Divide by 2, and you'll have the value for a. Plug that in to the equations, and you'll be able to find b.