kto zrobi?? 1. X-7=(7-X)-(14-2X) 2.X-4X +(2X+3)=6(3-X) 3.2X+15=16(1+0,125X)
kto zrobi??
1. X-7=(7-X)-(14-2X)
2.X-4X +(2X+3)=6(3-X)
3.2X+15=16(1+0,125X)
1. X-7=(7-X)-(14-2X) x-7=7-x-14+2x x - 7 = -7+x x - x = 7-7 0x = 0 2.X-4X +(2X+3)=6(3-X) x-4x + 2x + 3 = 18 - 6x -x + 3 = 18-6x -x + 6x = 18 - 3 5x = 15 x = 3 3.2X+15=16(1+0,125X) 2x + 15 = 16 + 2x 2x - 2x = 16 - 15 0x = 1
1. X-7=(7-X)-(14-2X) x-7=7-x-14+2x x+x-2x=7-14+7 0=0 2. X-4X +(2X+3)=6(3-X) x-4x+2x+3=18-6x x-4x+2x+6x=18-3 5x=15 x=3 3. 2X+15=16(1+0,125X) 2x+15=16+2x 2x-2x=16-15 0≠1
1. X-7=(7-X)-(14-2X) x-7=7-x-14+2x x+x-2x=7-14+7 0=0 2. X-4X +(2X+3)=6(3-X) x-4x+2x+3=18-6x x-4x+2x+6x=18-3 5x=15/5 x=3 3. 2X+15=16(1+0,125X) 2x+15=16+2x 2x-2x=16-15 0=1