Предмет: Математика, автор: venera2501

Раскройте скобки и приведите подобные слагаемые
3(х-7)+5х
5(4-3х)+8х
(у-4)*2+10у
(2у+5)*4-11у
4х+2(0,5х+3)
6х-3(х-7)

Ответы

Автор ответа: ivawka2006
0
3(х-7)+5х=3х-21+5х=8х-21
5(4-3х)+8х=20-15х+8х=20-7х
(у-4)*2+10у=2у-8+10у=12у-8
(2у+5)*4-11у=8у+20-11у= -3у+20
4х+2(0,5х+3) = 4х+х+6=5х+6
6х-3(х-7) = 6х-3х+21=3х+21
Автор ответа: venera2501
0
сверху в коментах
Автор ответа: ivawka2006
0
там все верно
Автор ответа: ivawka2006
0
выше все верно решено
Автор ответа: av128750
0
1) 3х-21+5х=8х+21
2) 20-15х+8х=20-7х
3) 2у-8+10у=12у-8
4) 8у+20-11у= 20-3у
5) 4х+1х+6=5х+6
6) 6х-3х+21=3х+21 
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