Предмет: Математика, автор: dianayakupova13

1) Найдите значение раскрывая скобки 
34,4-(18,1-5,6)+(-11,9+8)
2) Упростите 
а) 4m-6m-3m+7+m
б) -8* (x-3)+4*(x-2)-2*(3x+1)
В) 2/7-(14a-3 1/2b)- 1,2 (5/6a-0,5b)

Ответы

Автор ответа: aloynuchka
0
1)34,4-(18,1-5,6)+(-11,9+8)= 34,4-18,1+5,6-11,9+8=18

а) 4m-6m-3m+7+m=3m

б) -8* (x-3)+4*(x-2)-2*(3х+1)= -8х+24+4х-8-6х-2=-10х+14

в) 2/7-(14a-3 1/2b)- 1,2 (5/6a-0,5b)= 2/7 -14a+3 1/2b-a+3/5b=2/7-15a+3 7/10 b




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