oblicz równania: -6x=4x-10 -5x+4=3x 15x-4=20x-16 40-25x=50x+15 669x-1000=600x+800
oblicz równania:
-6x=4x-10
-5x+4=3x
15x-4=20x-16
40-25x=50x+15
669x-1000=600x+800
-6x=4x-10 -6x-4x=-10 -10x=-10 /:(-10) x=1 -5x+4=3x -5x-3x=-4 -8x=-4 /:(-8) x=1/2 15x-4=20x-16 15x-20x=-16+4 -5x=-11 /:(-5) x=2 i 1/5 40-25x=50x+15 -25x-50x=15-40 -75x=-25 /:(-75) x=1/3 669x-1000=600x+800 669x-600x=800+1000 69x=1800 /:69 x=1800/69 x=26 i 6/69 x= 2 i 2/23