35*х-72=453
35*х=453+72
35×х=525
х=525:35
х=15
35*15-72=145
145=145
35×х-72=453
35×х=453+72
×=525:35
×=15
—————————
35×15-72=453
453=453
35*х-72=453
35*х=453+72
35×х=525
х=525:35
х=15
35*15-72=145
145=145
35×х-72=453
35×х=453+72
35×х=525
×=525:35
×=15
—————————
35×15-72=453
453=453