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b) 0,5x - 3 = -5 ; 1/2x = -5 +3 ; 1/2x = -2; x=-2 :1/2; x = -2 *2 ; x= -4
c) 6x - 1= -7x - 14 ; 6x+7x =-14 +1 ; 13x=-13 ; x=-1
d)3x+ (x+75)= 183 - 5x ; 3x +x +75 +5x = 183 ; 9x=183 - 75; 9x =108
x=12
e) 2(x-1) - 3(x+1) = -8; 2x-2 -3x-3 =-8 ; -x= -8+2+3 ; -x = -3; x=3
f) 4(x+6)-8=2(x+6) ; 4x+24-8=2x+12 ; 4x-2x=12-24+8 ; 2x= -4; x=-2
g) -3(x-2)-5=3(x+5)+4 ; -3x+6-5 = 3x+15+4 ; -3x -3x = 19-6+5 ;
-6x = 18 ; x=-3
h) x-1+2(x-2)+ 3(x-3)=4 (x-2) ; x-1+ 2x-4 + 3x-9 = 4x -8;
6x - 4x = -8+1+4 +9 ; 2x=6 ; x=3
x=-10
b) 0,5x-3= -5
0,5x=-2
x=-4
c) 6x-1= -7x-14
13x=-13
x=-1
d) 3x+ (x+75)= 183-5x
3x+x+75=183-5x
4x+75=183-5x
9x=108
x=12
e) 2(x-1) - 3(x+1)= -8
2x-2-3x-3=-8
-x-5=-8
-x=-3
x=3
f) 4(x+6)-8=2(x+6)
4x+24-8=2x+12
4x+16=2x+12
2x=-4
x=-2
g) -3(x-2)-5=3(x+5)+4
-3x+6-5=3x+15+4
-3x+1=3x+19
-6x=18
x=-3
h) x-1+2(x-2) + 3(x-3)= 4(x-2)
x-1+2x-4+3x-9=4x-8
6x-14=4x-8
2x=6
x=3
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