Ответ:
-20/3×-6/5+х+0,5=0
8+х+0,5=0
х+8,5=0
х=-8,5
(5/14)×21/25-у=3 3/4
-3/10-у=15/4
-у=15/4+3/10
-у=75/20+6/20
-у=81/20
у=-4 1/20
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Ответ:
-20/3×-6/5+х+0,5=0
8+х+0,5=0
х+8,5=0
х=-8,5
(5/14)×21/25-у=3 3/4
-3/10-у=15/4
-у=15/4+3/10
-у=75/20+6/20
-у=81/20
у=-4 1/20