You can put this solution on YOUR website! The sum of 2 numbers is 40 and their difference is 18
.
Let x = one of two numbers
and y = the second number
.
x + y = 40
x - y = 18
.
Using the "elimination method" add the two equations together:
x + y = 40
x - y = 18
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2x = 58
x = 29
.
Substitute the above into:
x + y = 40
29 + y = 40
y = 40 - 29
y = 11
.
The two numbers are 29 and 11
