Question

the sum of 2 numbers is 21 there difference is7

Answer 1

Answer:

the sum of 2 numbers is 21 there difference is 7

Explanation:

x + y = 21

x − y = 7  y = 21 − x

x − (21− x ) = 7  

x − 21 + x = 7

2 x = 28  

x= 14  

∴ 14 + y = 21

y = 7

Hence, the numbers are  14  and  7.  

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