a)⅓x-2=x+2 ⅓x=x+4 / *3 x=3x+12 -2x=12 x=-6 b)1- 6/7x=47 / *7 7-6x=4 -6x=-3 x=½ c)6(¼x-2)=18 6/4x-12=18 3/2x=30 / *2 3x=60 x=20 d)x6-1/6=1 / *6 x-1=6 x=7 e)-2(2x-1)=x3 -4x+2=x/3 / *3 -12x+6=x -13x=-6 x=6/13 f)25(3-x)=-2 6/5-2/5x=-2 / *5 6-2x=-10 -2x=-16 x=8 g)34(2-3x)=9-x 3/2-9/4x=9-x / * 4 6-9x=36-4x 5x=30 x=6 h)15(x-3)=9-x 1/5x-3/5=9-x / *5 1x-3=45-5x 6x=42 x=7 i) 0,6 + x /2 = x+1 / *10 6+5x=10x+10 -5x=4 x=-4/5
Rozwiaz rownania: a)⅓x-2=x+2 ⅓x - x = 2 + 2 -⅔x = 4//: -⅔ x = -6 b)1- 6/7x=47 -⁶/₇x = ⁴/₇ - 1 - ⁶/₇x = -³/₇ //: -⁶/₇ x = ½ c)6(¼x-2)=18 6¼x - 12 = 18 6¼x = 18 + 12 6¼x = 30 //: 6¼x x = 4,8 d)x6-1/6=1 /* 6 x - 1 = 1 x = 1 + 1 x= 2 e)-2(2x-1)=x3 -4x + 2 = x/3 / *3 -12x + 6 = x -12x - x = -6 -13x = -6//: -13 x = ⁶/₁₃ f)25(3-x)=-2 1⅕ - ⅔x = -2 -⅔x = -2 - 1⅕ -⅔x = - 3⅕ //: -⅔ x = 4⁴/₅ g)34(2-3x)=9-x 1½ - 2¼x = 9 - x -2¼x + x = -1½ + 9 -1¼x = -8½ //: -1¼ x = 6,8 h)15(x-3)=9-x ⅕x - ³/₅ = 9 - x ⅕x + x = 9 + ³/₅ 2⅕x = 9³/₅ //: 2⅕ x = 4⁴/₁₁ i) 0,6 + x /2 = x+1 / * 2 1,2 + x = 2x + 2 x - 2x = -1,2 + 2 -x = -0,8 //: -1 x = 0,8
a) 1/3x-2=x+2 |*3 x-6=3x+6 x-3x=6+6 -2x=12 |:(-2) x=-6 b) 1-6/7x=4/7 |*7 7-6x=4 -6x=4-7 -6x=-3 |:(-6) x=3/6 c) 6(1/4x-2)=18 6/4x-12=18 1,5x=18+12 |*10 15x=300 |:15 x=20 d) x/6-1/6=1 |*6 x-1=6 x=1+6 x=7 e)-2(2x-1)=x/3 |*3 -6(2x-1)=x -12x+6=x 6=13x |:13 6/13=x f) 2/5(3-x)=-2 |*5 2(3-x)=-10 6-2x=-10 6+10=2x 16=2x |:2 x=8 g)3/4(2-3x)=9-x |*4 3(2-3x)=4(9-x) 6-9x=36-4x 6-36=-4x+9x -30=5x |:5 x=-6 h) 1/5(x-3)=9-x |*5 x-3=5(9-x) x-3=45-5x x+5x=45+3 6x=48 |:6 x=8 i)0,6+x/2=x+1 |*2 1,2+x=2x+2 |*10 12+10x=20x+20 12-20=20x-10x -8=10x |:10 -8/10=x -4/5=x nie wiem czy dobrze , ale mam taka nadzieje .. daj znac czy dobrze jak juz pani sprawdzi ; )
