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4x – 12 = 20
4x = 20 + 12
4x = 32 / : 4
x = 8
b) -3(x-2) = -12
-3x + 6 = -12
-3x = -12 – 6
-3x = -18 /: (-3)
x= 6
c) 6(2x+1) = 3(3x-8)
12x + 6 = 9x – 24
12x – 9x = -24 – 6
3x = -30 /: 3
x = - 10
d) -2(3x-1)-3 = -4
-6x + 2 – 3 = -4
-6x = -4 + 3 – 2
-6x = -3 /: (-6)
x = 0,5
e) 4(x-2) = 2(x+6) - 3 (x-1)
4x – 8 = 2x + 12 – 3x + 3
4x – 2x + 3x = 3 + 12 + 8
5x = 23 /: 5
x = 4,6
4x-12=20
4x=32
x=8
b)-3(x-2)=-12
-3x-6=-12
3x=6
x=2
c)6(2x+1)=3(3x-8)
12x+6=9x-24
3x=18
x=6
d)-2(3x-1)-3=-4
-6x-2-3=-4
-6x=-4+2+3
6x=4-2-3
6x=-1
x=-1/6
e)4(x-2)=2(x+6)-3(x-1)
4x-8=2x+12-3x+3
5x=20
x=4
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