Let's call the two numbers x and y. According to the problem, the sum of the two numbers is 15, so we can write the equation:
x + y = 15
Also, the difference between the two numbers is 4, so we can write the equation:
x - y = 4
Now we have a system of two equations. We can solve this system by either substitution or elimination.
Let's solve this system using the elimination method:
Adding the two equations together, we have:
(x + y) + (x - y) = 15 + 4
Simplifying, we get:
2x = 19
Dividing both sides by 2, we find:
x = 9.5
Substituting x = 9.5 into one of the equations, we can find the value of y:
9.5 + y = 15
y = 15 - 9.5
y = 5.5
Therefore, the two numbers are 9.5 and 5.5.
Find two numbers with sum of 15 and difference of 4
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