Ответ:1)260=100%
Х=35%
(35*260)/100=(7*260)/20=7*13=91
2)201-(176.4:16.8+9.68)*2.5=201-20.18*2.5=201-50.45=150.55
3)12%=900
100%=х
х=(900*100)/12=7500
4)12+8.3х+1.5х=95.3
12+9.8х=95.3
9.8х=95.3-12
9.8х=83.3
х=83.3:9.8
х=8.5
5)100%-(30%+60%)=10%
10%=42м
х=(100*42)/10=420м
Пошаговое объяснение:
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Ответ:1)260=100%
Х=35%
(35*260)/100=(7*260)/20=7*13=91
2)201-(176.4:16.8+9.68)*2.5=201-20.18*2.5=201-50.45=150.55
3)12%=900
100%=х
х=(900*100)/12=7500
4)12+8.3х+1.5х=95.3
12+9.8х=95.3
9.8х=95.3-12
9.8х=83.3
х=83.3:9.8
х=8.5
5)100%-(30%+60%)=10%
10%=42м
100%=х
х=(100*42)/10=420м
Пошаговое объяснение: