Реши уравнения
(х+240)*3=1260
х+(240*3)=1260
х+240=1260*3
* это умножение
х+240=1260:3
х+240=420
х=420-240
х=180
х+720=1260
х=1260-720
х=540
х+240=3780
х=3780-240
х=3540
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Verified answer
х+240=1260:3
х+240=420
х=420-240
х=180
х+720=1260
х=1260-720
х=540
х+240=3780
х=3780-240
х=3540