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- anonymous

The sum of two numbers is 90. Their difference is 12. What are the numbers?
Select one:
a. no solution
b. 31 and 59
c. 35 and 47
d. 39 and 51

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- anonymous

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- alekos

let the numbers be a an b
a + b = 90
and a - b = 12

- alekos

Now solve

- anonymous

all u have to do is add two numbers like 31+59=?your answer it has to equal 90 cause its asking to find 2 #'s that equal 90 so check A first and se if u get 90 as a answer

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- anonymous

sorry I meant b so ...31+59=90 so B is ur answer

- anonymous

actually it is c because the numbers have to have a difference of 12

- anonymous

if the answer 31+59 and equals 90 doesn't that answer already have a difference of 12

- anonymous

no it has a difference of 28 @daddysgirl14

- anonymous

ok then its C ....

- anonymous

it's 39 and 51

- anonymous

thank you for trying though(: @daddysgirl14

- anonymous

thx add me if u want

- anonymous

@annas we already figured this out it is c not b

- anonymous

51 - 39 = 12 :3

- anonymous

hi everyone

- anonymous

51-39 does equal 12 but im still think its C

- anonymous

so it could be c or d but I'm going with c

- anonymous

x+y = 90
x-y = 12
Add the equations
2x = 102
x = 102/2
x = 51
putting x in equation 1
(51) + y = 90
y = 90 - 51
y = 39
so x= 51 , y= 39
51 - 39 = 12

- anonymous

Please dont guide her wrong. Thank you!

- anonymous

51 + 39 = 90 too

- anonymous

i said that at first too

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