Ответ:
2,5-х+3/4=1 8/9; 5/2-х+3/4=17/9;
х=5/2-3/4-17/9;36х=90-27-68;36х=-5; х=-5/36
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Ответ:
2,5-х+3/4=1 8/9; 5/2-х+3/4=17/9;
х=5/2-3/4-17/9;36х=90-27-68;36х=-5; х=-5/36