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dogbird45
@dogbird45
August 2022
1
4
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Номер 1816 , 1817 ( если не трудно.) . Спасибо)))
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Mesher
1816
а) (369+471):(872-842)=
1)369+471=840
2)872-842=30
3)840:30=28
б) (38*48):(39+57):
1)38*48=1824
2)39+57=96
3)1824:96=19
1817
13х+12х+15=240
25х+15=240
25х=240-15
25х=225
х=225:25
х=9
(14х-2х):17=312
12х:17=312
12х=312*17
12х=5304
х=5304:12
х=442
1 votes
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Answers & Comments
а) (369+471):(872-842)=
1)369+471=840
2)872-842=30
3)840:30=28
б) (38*48):(39+57):
1)38*48=1824
2)39+57=96
3)1824:96=19
1817
13х+12х+15=240
25х+15=240
25х=240-15
25х=225
х=225:25
х=9
(14х-2х):17=312
12х:17=312
12х=312*17
12х=5304
х=5304:12
х=442