Moglibyście mi rozwiązać te 2 pierwsze zadania ? http://pl.static.z-dn.net/files/da0/a8aaa68c89bf108a388cb62b9546862e.pdf
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cw1
a)x=4
b)x=4
c)3x+1=2x+3 -2x
x+1=3 -1
x=2
d)2x+2=x+5 -x
x+2=5 -2
x=3
cw2
a)x=13
b)x=95
c)z=-6