+0  
 
+1
57
17
avatar+201 

What is the smallest positive integer that is the sum of a multiple of 15 and a multiple of 21? (Remember that multiples can be negative.)

 Apr 6, 2020
edited by qwertyuiopasdfghjkl  Apr 6, 2020

Best Answer 

 #10
avatar+252 
0

I got three

-2(21)+3(15)=-42+45=3

 

smileysmileysmileysmileysmiley

 Apr 6, 2020
 #1
avatar+252 
0

multiple of what? they are blnk.

 Apr 6, 2020
 #2
avatar+201 
+1

Sorry, the numbers are 15, 21(in order)

 Apr 6, 2020
 #3
avatar+98 
+2

yep the Q guy is right

 Apr 6, 2020
 #4
avatar+201 
+1

Ok, i fixed the question. If anyone could figure this out, that would be great!

 Apr 6, 2020
 #5
avatar+98 
+1

i can just give me the link

grannygod123  Apr 6, 2020
 #6
avatar+201 
+1

Ummm.. what does that mean?

 Apr 6, 2020
 #8
avatar+98 
+1

i refreshed the page i cant see it

grannygod123  Apr 6, 2020
 #7
avatar+111360 
+2

I get 6

 

(-15)  is a  multiple  of 15

 

(21)  is a multiple  of 21

 

So

 

-15  + 21  =  

 

6

 

Anyone  have a different (better) answer   ???

 

 

cool cool cool

 Apr 6, 2020
 #9
avatar+98 
+1

36 beachuse

1+2=3

and 5+1=6 so

it is 36

 Apr 6, 2020
 #10
avatar+252 
0
Best Answer

I got three

-2(21)+3(15)=-42+45=3

 

smileysmileysmileysmileysmiley

MooMooooMooM Apr 6, 2020
 #11
avatar+98 
+1

so who's right

grannygod123  Apr 6, 2020
 #12
avatar+98 
+1

so who's right :/

grannygod123  Apr 6, 2020
 #13
avatar+111360 
0

Quadruple  M  is correct!!!!

 

 

cool cool cool

CPhill  Apr 6, 2020
 #14
avatar+98 
+1

but why would he answer his own Q

grannygod123  Apr 6, 2020
 #15
avatar
0

How about: -7(15) + 5(21) = 0

Guest Apr 6, 2020
 #16
avatar+928 
+2

That doesn't work becuase the question asks for "What is the smallest positive integer..." and 0 is not positive.

 

Hope it helps!

HELPMEEEEEEEEEEEEE  Apr 6, 2020
 #17
avatar+111360 
0

******

 

 

cool cool cool

CPhill  Apr 6, 2020
edited by CPhill  Apr 6, 2020

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