" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
-2x+3y=-1
3x-3y+4x+4y=15
-2x+3y= -1
7x+y=15/*(-3)
-2x+3y= -1
-21x-3y= -45
-2x+3y= -1
------------------
-21x-2x=-45-1
-23x=-46/:(-23)
x=2
-2x+3y= -1
-2*2+3y= -1
-4+3y= -1
3y= -1+4
3y=3/:3
y=1
x=2
y=1