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2x=18 -2x=2
x=9 x=-1
b) -3x+6=24 v 3x-6=24
-3x=18 3x=30
x=-6 x=10
c) 1/2x+3=2 v -1/2x-3=2
x+6=4 -x-6=2
x=-2 x= -8
d) 5-x/10=1 v -5+x/10=1
50-x=10 -50+x=10
x=40 x=60
e)-5x-1=10 v 5x+1=10
-5x=11 5x=11
x= -2całe i 1/5 x=2 całę i 1/5
f) - 5/6x +10= 5 v 5/6x-10=5
-5x+60= 30 5x -60=30
-5x=-30 5x=90
x=6 x=18