решите уровнение 4.7-8z=4.9-10z
-8z+10z=4.9-4.7
2z=0,2
z=0,1
4.7-8z=4.9-10z
-8z+10z=4.9-4.7 2z=0,2 z=0,1
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-8z+10z=4.9-4.7
2z=0,2
z=0,1
4.7-8z=4.9-10z
-8z+10z=4.9-4.7
2z=0,2
z=0,1