(72-х):6+25=34 ПОЖАЛУЙСТА РЕШИТЕ 28:(20*у-76)=7
(72-х):6+25=34 28:(20y-76)=7
72-х=34-25х6 20y-76=28:7
72-х=54 20y=4+76
х=72-54 20y=80
х=18 y=80:20
_________________ y=4
(72-18):6+25=34 _____________________
28:(20х4-76)=7
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(72-х):6+25=34 28:(20y-76)=7
72-х=34-25х6 20y-76=28:7
72-х=54 20y=4+76
х=72-54 20y=80
х=18 y=80:20
_________________ y=4
(72-18):6+25=34 _____________________
28:(20х4-76)=7