Thread: Various Signed Numbers

I forgot how to do this. Please solve and explain.

Originally Posted by radioflyer01

I forgot how to do this. Please solve and explain.

(2 + 3 + 5)/(-2) = 10/(-2) = -5

4 - (-6) + [-(3 + 1) -2] = 4 + 6 - 4 - 2 = 4

u + (-21) = 18 --> u - 21 = 18

u - 21 + 21 = 18 + 21

u = 39

Thanks. But I'm not sure how the first and the third problem was solved. How exactly was it done?

Was it devide the sum of 2,3,5 =10 by -2?

yes in the first problem its divide so


in the 3rd problem



this becomes as + - becomes -

then move the -21 to the otherside of the equation

if thats not clear still, tell me and ill do a long step by step explanation

No sweat. I got it.