The sum of two numbers is 187 and their difference is 9. Find the numbers

Question

I need to find the numbers 

Answer 1

Here's what we know:

a + b = 187

a - b = 9  We can use the elimination method to solve

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2a = 196

a = 98

 

98 + b = 187

b = 89

 

check:

98 - 89 = 9

9 = 9