Question

What are that two numbers whose sum is 58 and difference is 28?

Answer 1

x+y=58
x-y=28
x=28+y
28+y+y=58
2y=58-28
2y=30
y=30/2
y=15
x=28+y
x=28+15
x=43

Answer 2

the two numbers are 43 and 15
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