" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
i mamy tak:
4(2x-y+3) - 3(x-2y+3)=48
3(3x-4y+3)+4(4x-2y-9)=48
8x-4y+12-3x-6y+9=48
9x-12y+9+16x-8y-36=48
5x-10y=27
25x-20y=75 | /(-5)
5x-10y=27
-5x+4y=-15
+__________
5x-10y-5x+4y=12
5x-10y=27
-6y=12
5x-10y=27
y=-2
5x-10*(-2)=27
y=-2
5x=7
y=-2
x=1,4
chyba dobrze ;d