jak mam obliczyć z tego y ?- f(x)= 4/x-f(x)= -4/x-f(x)= 1/x -f(x)= -1/x Pilne! Na Dziś....
i) 1/2*(x-1) = 4
1/2x - 1/2 = 4 / * 2
x - 1 = 8
x = 8 + 1
x = 9
j) -1/4*(2+x)= 3/4x
-2/4 - 1/4x = 3/4x / *4
-2 - x = 3x
-3x - x = 2
-4x = 2/:(-4)
x = -2/4
k)-2*(x+1/2)-3*(x+1/3) = 0
-2x - 1 -3x - 1 = 0
-2x - 3x = 0 + 1 + 1
-5x = 2 / :(-5)
x = - 2/5
l) (x+2)*6 = 0,5x
6x + 12 = 0,5x / *10
60x = 120 = 5x
60x - 5x = 120
55 x = 120/:55
x = 2 10/55
m) 0,1*(x+2) = 0,2x
1/10x + 2/10 = 0,2x / *10
x + 2 = 2x
x - 2x = -2
-1x = -2/: (-1)
x = 2
Nie wiem czy dobrze bo nie moge sie wyczytac ze znakow ;p
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i) 1/2*(x-1) = 4
1/2x - 1/2 = 4 / * 2
x - 1 = 8
x = 8 + 1
x = 9
j) -1/4*(2+x)= 3/4x
-2/4 - 1/4x = 3/4x / *4
-2 - x = 3x
-3x - x = 2
-4x = 2/:(-4)
x = -2/4
k)-2*(x+1/2)-3*(x+1/3) = 0
-2x - 1 -3x - 1 = 0
-2x - 3x = 0 + 1 + 1
-5x = 2 / :(-5)
x = - 2/5
l) (x+2)*6 = 0,5x
6x + 12 = 0,5x / *10
60x = 120 = 5x
60x - 5x = 120
55 x = 120/:55
x = 2 10/55
m) 0,1*(x+2) = 0,2x
1/10x + 2/10 = 0,2x / *10
x + 2 = 2x
x - 2x = -2
-1x = -2/: (-1)
x = 2
Nie wiem czy dobrze bo nie moge sie wyczytac ze znakow ;p