Napisz do nich(rownan) sprawdzenia np. L=5-5=0 P=8-8=0 a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7) b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7) c) (4x-5)+(x-7)-(2x-8)=(-3x+4)-(x-6) d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x) najpierw trzeba znac rozwiązania a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7) 3-2x-x-4-2x-5=3x-4-5x-7 -5x-6=-2x-11 -3x=-5 x=5/3 spr L=9/3-10/3-(5/3+12/3)-(10/3+15/3)=-1/3-17/3-25/3=-43/3 P=5-4-(25/3+21/3)=1-46/3=-43/3 L=P b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7) 4-x-2x-3+x-4=-2x+3-x-7 -2x-3=-3x-4 x=-1 L=5-1-5=-1 P=-(-5)-6=-1 L=P c) (4x-5)+(x-7)-(2x-8)=(-3x+4)-(x-6) 3x-4=-4x+10 7x=14 x=2 L=3-5+4=2 P=-2+4=2 L=P d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x) -4+2x-2x-4=3x-1+2x-5-7+3x -8=8x-13 8x=5 x=5/8 L=-(32/8-10/8)-(10/8+32/8)=-22/8-42/8=-64/8=-8 P=15/8-8/8+10/8-40/8-(56/8-15/8)=7/8-30/8-41/8=-64/8=-8 L=P
a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7) 3 - 2x - x - 4 - 2x - 5 = 3x - 4 - 5x - 7 -2x - x - 2x - 3x + 5x = -4 - 7 -3 + 4 + 5 -3x = -5 x = 5/3 spr: L = (3-2*5/3)-(5/3+4)-(2*5/3+5) L = 3 - 10/3 - 5/3 - 4 - 10/3 - 5 L = -25/3 - 6 L = -25/3 - 18/3 L = - 43/3 L = 14 i 1/3 P = (3*5/3-4)-(5*5/3+7) P = 5 - 4 - 25/3 - 7 P = -25/3 - 6 L = -25/3 - 18/3 L = - 43/3 L = 14 i 1/3 L = P b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7) 4 - x - 2x - 3 + x - 4 = -2x + 3 - x - 7 - x - 2x + x + 2x + x = 3 - 7 - 4 + 3 + 4 x = -1 spr: L = [4-(-1)]-[2*(-1)+3] + (-1-4) L = 4 + 1 + 2 - 3 - 1 - 4 L = -1 P = -[2*(-1)-3]-(-1+7) P = 2 + 3 + 1 - 7 P = -1 L = P c) (4x - 5) + (x - 7) - (2x - 8) = (-3x + 4) - (x - 6) 4x - 5 + x - 7 - 2x + 8 = -3x + 4 - x + 6 4x + x - 2x + 3x + x = 4 + 6 + 5 + 7 - 8 7x = 14 /:7 x = 2 spr: L = (4*2 - 5) + (2 - 7) - (2*2 - 8) L = 8 - 5 + 2 - 7 - 4 + 8 L = 2 P = (-3 * 2 + 4) - (2 - 6) P = -6 + 4 - 2 + 6 P = 2 L = P d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x) -4 + 2x - 2x - 4 = 3x - 1 + 2x - 5 - 7 + 3x - 3x - 2x - 3x = -1 - 5 - 7 + 4 + 4 - 8x = -5 /:(-8) x = 5/8 spr: L = -(4-2*5/8) - (2*5/8 + 4) L = -4 + 10/8 - 10/8 - 4 L = -8 P = (3*5/8 - 1) + (2*5/8 - 5) - (7 - 3*5/8) P = 15/8 - 1 + 10/8 - 5 - 7 + 15/8 P = 40/8 - 13 P = 5 - 13 P = - 8 L = P Pozdrawiam ;)
a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7) 3-2x-x-4-2x-5 = 3x-4-5x-7 -5x-6 = -2x-11 -3x = -5 |:(-3) x = 5/3 L = (3-2*5/3)-(5/3+4)-(2*5/3+5) = (3-10/3)-17/3-25/3 = -1/3-17/3-25/3 = -43/3 P = (3*5/3-4)-(5*5/3+7) = 5-4-(25/3+21/3) = 1-46/3 = -43/3 L = P b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7) 4-x-2x-3+x-4 = -2x+3-x-7 -2x-3 = -3x-4 x = -4+3 x = -1 L = (4+1)-(-2+3)+(-1-4) = 5-1-5 = -1 P = -(-2-3)-(-1+7) = 5-6 = -1 L = P c) (4x-5)+(x-7)-(2x-8)=(-3x+4)-(x-6) 4x-5+x-7-2x+8 = -3x+4-x+6 3x-4 = -4x+10 7x = 14 |:7 x = 2 L = (8-5)+(2-7)-(-4) = 3-5+4 = 2 P = (-6+4)-(-4) = -2+4 = 2 L = P d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x) -4+2x-2x-4 = 3x-1+2x-5-7+3x -8 = 8x-13 -8x = -13+8 -8x = -5 |:(-8) x = 5/8 L = -(4-10/8)-(10/8+4) = -22/8-42/8 = -64/8 = -8 P = (15/8-1)+(10/8-5)-(7-15/8) = 7/8-30/8-41/8 = -64/8 = -8
