cupcakes123

What is the substitution for X+Y=0 and X-Y=10?

Posted:
3+ months ago by cupcakes123
Topics:
math
Answer this Question Report Mark as Favorite

Answers (1)

Lakis01

X+Y=0 -> X=0-Y -> X=-Y
X-Y=10 -> (-Y)-Y=10 -> -2*Y=10 -> Y=10/(-2) -> Y=-5 -> X=-(-5) -> X=5

Votes: +1 / -0
Comment Vote up Vote down Report
Sherpad G...

I like the way your step by step procedure compensates for the lack of an explanation.

Add Comment