avamwolf1 avamwolf1

11-12-2020
Mathematics

contestada

WILL GIVE BRAINLIEST

The difference of two numbers is 4. Their sum is 12. What are the numbers?

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endrovergonza1 endrovergonza1

11-12-2020

Answer:

^algebra^

#1). a - b=4

a=4 + b .....(equation 1)

#2) a + b=12

(4 + b) + b= 12

4 + b + b=12

4 + 2b=12

2b= 12 - 4

2b =8

b= 8:2

b=4

subtituted b in equation 1

a= 4 + b

a= 4 + 4

a=8

so, the number is 8 and 4

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