" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
12x+4-15y+10=0
8x+15y=40+4+10
12x-15y=-4-10
8x+15y=54
12x-15y=-14
___________
20x=40/:20
x=2
8x+15y=54
8*2+15y=54
16+15y=54
15y=54-16
15y=38/:15
y≈3