3 years ago

The sum of two numbers is 25. Their difference is 9. What are the two numbers?

2 answers:

5 0

Using x and y as the numbers

x+y=25 -------#1
x-y=9 -------#2

Using addition of #1 and #2
x+y+x-y= 25+9
2x+0y=34
2x=34
x=17

Using the value of x and plugging said value into #1 or #2, we can find y
x=17

x+y=25
17+y=25
y=8

OR

x-y=9
17-y=9
-y=-8
y=8

The numbers are 8 and 17

Julli [10]3 years ago

3 0

I'm Just guessing 16 and 9.

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