rozwiąż równanie i sprawdź jego winik: a)-7x+5=11x+41 -7x -11x = 41 -5 -18x = 36 x = 36 : (-18) x = -2 spr. L(-2) = (-7)*(-2) + 5 = 14 +5 = 19 P(-2) = 11*(-2) + 41 = -22 + 41 = 19 L(-2) = P(-2) b)36x-14=14x-36 36x -14x = -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) c)3x-4=4x 3x -4x = 4 -x = 4 x = -4 L(-4) = 3*(-4) -4 = -12 -4 = -16 P(-4) = 4*(-4) = -16 L(-4) = P(-4) d)3x+9=-3+9 3x = 6 -9 3x = -3 x = (-3) : 3 x = -1 L(-1) = 3*(-1) + 9 = -3 + 9 = 6 P(-1) = -3 + 9 = 6 L(-1) = P(-1) e)-27+1=2x+59 -26 = 2x + 59 -2x = 59 + 26 -2x = 85 x = 85 : (-2) x = - 42,5 L(-42,5) = -27 + 1 = -26 P(-42,5) = 2*(-42,5) + 59 = -85 + 59 = -26 L(-42,5) = P(-42,5) f)45x-19=19x-45 45x -19x = - 45 +19 26x = -26 x = (-26) : 26 x = -1 L(-1) = 45*(-1) - 19 = -45 -19 = -64 P(-1) = 19*(-1) - 45= -19 -45 = -64 L(-1) = P(-1) g)82x-9=-18x+1 82x +18x = 1 +9 100 x = 10 x = 10 : 100 x = 1/10 x = 0,1 L(0,1) = 82*(0,1) - 9 = 8,2 - 9 = - 0,8 P(0,1) = -18*(0,1) + 1 = -1,8 + 1 = - 0,8 L(-0,1) = P(0,1)
a) -7x+5=11x+41 -7x-11x=41-5 -18x=36/9-18) x=-2 b)36x-14=14x-36 36x-14x=-36+14 22 x=-22/22 x=-1 c) 3x-4=4x 3x-4x=4 -1x=4/(-1) x=-4 d) -3x+9=-3+9 -3x=6-9 -3x=-3/(-3) x=1 e) -27+1=2x+59 -2x=59+26 -2x=85/(-2) x=-42,5 f) 45x-19=19x-45 45x-19x=-45+19 26x=-26/26 x=-1 g) 82x-9=-18x+1 82x+18x=1+9 100x=10/100 x=0,1
