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4x-3x=5+3
x=8
b) 5x+2=7-3x
5x+3x=7-2
8x=5
c)
3[x-1]=0
3x-3=0
3x=3/:3
x=1
d)
-6[x+1]=24
-6x-6=24
-6x=24+6
-6x=30 /:(-6)
x=-5
e) -7[x-2]=3x-1
-7x+14=3x-1
-7x-3x=-1-14
-10x=-15 /:10
x= 15/10
x=1 1/2
f)
4[x-1]=6[1+x]
4x-4=6+6x
4x-6x=6+4
-2x=10/: (-2)
x=-5