Раскройте скобки и превидите подобные слагаемые
1) 5a-(0,7a+8);
2) 9,6b+(7-0,4b)
3) -5c+(13-6c)
4) 5(4-3x)+8x
5) (2y+5)•4-11y
6) 6x-3(x-7)
Пожалуйста!!
Срочно!!
:-(
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