А) х/3+х/6=1 Б) z/8-z/4=3 D) y/2-y/7=5 K)х/5-4=х/3 Y) y/3=y/2-7 O) z/5=z/10+1  u/2-3=u/4+5 
x/5 -2/x+x/20=1
x/2-x/12=3-x/3
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