" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
x+3y=9 |×1|
----------- -
6x+3y=12
x+3y=9
------------- -
5x=3
x=3/5
x+3y=9
3/5+3y=9
3y=9-3/5
3y=6/5
y=6/5×3
y=18/5
3
y=3---
5