Question

Срочно, дам 20 баллов.((
1) -3(6а-12d-7m)
2)18k+(4-3a)
3)5y-(4a-13)
4)5a-6a+2a-10a
5)5a+c-7c+3a
6.)12x-11+4a-3x-2a
7)3(-2x+5)+4(x-2)
8)-(2a-3)-2(3a-1)
9)-5(3у-1)-2(4+у)

Answer 1

1)= -18а+36d+21m
2)=18k+4-3a
3)=5y-4a+26
4)=-9a
5)=8a-6c
6)=9x-11+2a
7)=-6x+15+4x-8=-2x+7
8)=-2a+6-6a+1=-8a+7
9)=-15y+5-8-2y=-17y-3

Answer 2

1)-3(6а-12d-7m) = -3•6а-3(-12d)-3(-7m) = -18a+36d+21m
2)18k+(4-3a) = 18k+4-3a
3)5y-(4a-13) = 5y-4a+13
4)5a-6a+2a-10a = (5-6+2-10)a = -9a
5)5a+c-7c+3a = 8a-6c
6.)12x-11+4a-3x-2a = 9x-11+2a
7)3(-2x+5)+4(x-2) = -6x+15+4x-8 = -2x+7
8)-(2a-3)-2(3a-1) = -2a+3-6a+2 = -8a+5
9)-5(3у-1)-2(4+у) = -15y+5-8-2y = -17y-3