-9x+7=3x-5 15x-30=2x+60 2x-15=5x+1 2x-15=x+1

-9x + 7 = 3x - 5 -9x - 3x = -5 - 7  -12x = -12  /:(-12) x = 1  15x - 30 = 2x + 60 15x - 2x = 60 + 30 13x = 90  /:13 x = 90/13 x = 6 i 12/13  2x - 15 = 5x + 1 2x - 5x = 1 + 15 -3x = 16  /:(-3) x = -16/3  x = -5 i 1/3  2x - 15 = x + 1 2x - x = 1 + 15 x = 16 

-9x + 7 = 3x - 5 -9x - 3x= -5 - 7 - 12x= - 12 x= - 12 : (-12) x= 1 spr. -9x + 7 = 3x - 5 L= - 9x + 7= -9*1 + 7 = - 9 +7 = -2 P= 3x - 5= 3*1 - 5= 3-5 = -2 -2=-2 L=P 15x-30=2x+60 15x - 2x = 60 + 30 13x = 90 x= 90 : 13 x= 6 i 12/13 spr. 15x-30=2x+60 L= 15x- 30= 15 * 6 i 12/13  - 30 = 15 * 90/13 - 30 = 1350/13 - 30 = 103 i 11/13- 30 = 73 i 11/13 P = 2x + 60 = 2* 6 i 12/13 + 60 = 2* 90/13 + 60= 180/13 + 60 = 13 i 11/13 + 60= 73 i 11/13 73 i 11/13 = 73 i 11/13 L=P 2x - 15 = 5x + 1 2x - 5x= 1 + 15 -3x = 16 x= 16 : (-3) x= - 5 i 1/3 spr. 2x-15 = 5x +1 L= 2x-15 =2* (-5 i 1/3) - 15= 2 * (-16/3) - 15= - 32/3 - 15= - 10 i 2/3 - 15= -25 i 2/3 P= 5x + 1 = 5 * (-5 i 1/3)  +1 = 5 *(-16/3) +1= - 80/3 +1= - 26 i 2/3 + 1= - 25 i 2/3 -25 i 2/3 = - 25 i 2/3 L=P 2x-15=x+1 2x - x= 1 + 15 x= 16 spr. 2x - x = 1 + 15 L = 2x-x = 2*16 - 16= 32 - 16= 16 P= 1 + 15= 16 16=16 L=P