2LeiLei2 2LeiLei2

21-10-2018
Mathematics

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A number is 6 greater than 1/2 another number. If the sum of the numbers is 21, find the numbers

Respuesta :

daphnewong daphnewong

21-10-2018

Answer:

x=11, y=10

Step-by-step explanation:

x= 6+ (1/2)y

x+y=21

substitute the first equation into the second equation:

(6+ (1/2y)) + y =21

to get:

y=10

then to find x:

x+ 10 = 21

x=11

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