a)2(x+3)-3(x+1)=x-13
b)1+2[3(x-1)-5(2x-3)]=2x-7
c)5(x-1)-2(x+3)=3x+2
d)3(2x-3)+2(x-4)=4(x-2)-3(5-x)
e)4(x-2)-5(3x-9)=0
f)2(3-x)+5=3-2(x-4)
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a) 2x + 6 - 3x - 3 = x-13
6-3+13 = x -2x +3x
16 = 2x / :2
x=8
b) 1+2(3x - 3 - 10x + 15) = 2x - 7
1+6x - 6 - 20x + 30 = 2x - 7
1 - 6 + 30 + 7 = 2x - 6x +20x
32 = 16x /:16
x= 2
c) 5x - 5 - 2x -6 = 3x-2
0≠ -3
d) 6x - 9 + 2x -8 = 4x - 8 - 15 +3x
6x +2x - 4x +3x= -8-15+8+9\
4x = -6 /:4
x= - 1.5
e)4x - 8 - 15x + 45 = 0
4x - 15x = 0+8-45
-11x = - 37 / :(-11)
x = 3,(36)
f) 6x - 2x + 5 = 3 - 2x + 8
6x = 3+8-5
6x = 6 / :6
x=1
licze na naj :))