(72*100-52*10)-(5*х+90)=23*100+42-10

Ответ:

(72*100-52*10)-(5*х+90)=23*100+42-10;

(7200-520)-(5х+90)=2300+32 ;

6680-5х-90=2332;

6590-5х=2332 ;

5х = 6590-2332;

5х = 4258 ;

х = 851.6 ;

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