The sum of two numbers is 51. The larger number is 5 more than the smaller number. What are the numbers?

Answer 1

y = x +5
y+ x = 51
so
x+5 + x = 51
2 x = 46
x = 23
y = 23 + 5 = 28
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check
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23 + 28 = 51
23 + 5 = 28. YES !