7x-4=x+2, 7x -x = 2 +4 6x = 6 x = 1 L(1) = 7*1 -4 = 7-4 = 3 P(1) = 1 + 2= 3 L(1) = P(1) -5x+4=x-8, -5x -x = -8 -4 -6x = -12 x = (-12) : (-6) x = 2 L(2) = (-5)*2 + 4 = -10 + 4 = -6 P(2) = 2 -8 = -6 L(2) = P(2) -2x-7=2x-7, -2x -2x = -7 +7 -4x = 0 x = 0 L(0) = -1*0 -7 = -7 P(0) = 2*0 -7 = -7 -7x+5=11x+41 -7x -11x = 41 -5 -18x = 36 x = 36 : (-18) x = -2 L(-2) =(-7)*(-2) + 5 = 14 + 5 = 19 P(-2) = 11*(-2) + 41 = -22 + 41 = 19 L(-2) = P(-2) 36x-14=14x-36 36x -14 x = -36 +14 22 x = -22 x = (-22) : 22 x = -1 L(-1) = 36*(-1) -14 = -36 -14 = -50 P(-1) = 14*(-1) -36 = -14 -36 = -50 L(-1) = P(-1)
1) 7x-4=x+2 7x-x=2+4 6x=6 /:6 x=1 spr. (7*1)-4=1+2 3=3 2) -5x+4=x-8 -5x-x=-8-4 -6x=-12 /(-6) x=2 spr. (-5*2)+4=2-8 -6=-6 3)-2x-7=2x-7 -2x-2x=-7+7 4x=0 /:4 x=0 spr.(-2*0)-7=(2*0)-7 0-7=0-7 -7=-7 4)-7x+5=11x+41 -7x-11x=41-5 -18x=36 /:(-18) x=-2 spr.(-7*-2)+5=[11*(-2)]+41 14+5=-22+41 19=19 5)36x-14=14x-36 36x-14x=-36+14 22x=-22 /:22 x=-1 spr. [36*(-1)]-14=[14*(-1)]-36 -36-14=-14-36 -50=-50
