jahniece jahniece

24-07-2017
Mathematics

contestada

Find the value of two numbers if their sum is 12 and the difference is 4

Respuesta :

musiclover10045 musiclover10045

24-07-2017

x+y=12

x-y=4

x=y-4

y-4+y=12

2y-4=12

2y=16

y=8

x=8-4=8

8+4=12

the 2 numbers are 8 & 4

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