Rozwiąż równania. a) 2x+3 2-x ------ = ------ - x 5 3 b) x+1 x-1 ------ - ------ = ¼ 2 3 c) 4x+7 5x-1 ------- - ------- = x + 5 2 6 d) x+5 2x+1 ------ - ------- = ½ (2 - x) 4 8

Rozwiąż równania. a) [2x+3]/5=[2-x]/3-3(*15) 15[2x+3]/5=15[2-x]/3-15*3 6x+9=10-5x-45 6x+5x=10-45-9 11x=-44 x=-4 b) [x+1]/2-[x-1]/3=1/4(*12) 12[x+1]/2-12[x-1]/3=1/4[12] 6x+6-4x+4=3 2x=3-10 2x=-7 x=-3,5 c) [4x+7]/2-[5x-1]/6=x+5(*6) 6[4x+7]/2-6[5x-1]/6=6x+5*6 12x+21-5x+1=6x+30 12x-5x-6x=30-22 x=8 d) [x+5]/4-[2x+1]/8=1/2[2-x] [x+5]/4-[2x+1]/8=1-1/2x(*8) 8[x+5]/4-8[2x+1]/8=8-4x 2x+10-2x-8=8-4x 2x-2x+4x=8-10+8 4x=6 x=3/2 x=1,5