the sum of two numbers is 19 and their difference is 3
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Answer:
Here's what we know:
a + b = 19 (the 2 numbers added together is 19)
a - b = 3 (their difference is 3)
We can solve this by using the addition method to eliminate a variable:
a + b = 19
a - b = 3
------------------
2a + 0b = 22
2a = 22
Divide by 2:
a = 11
11 + b = 19
Subtract 11 from both sides:
b = 8
Check:
11 - 8 = 3
3 = 3
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