в) 3a*(7-b)-(b-3a)=
=3a*7-3ab-b+3a=21a-3ab-b+3a=24a-3ab+3a
д) (3x-11)*0.2-5*(4-3x)=
=3x*0.2-11*0.2-5*4+5*3x=
=0.6x-2.2-20+15x=15.6x-22.2
ж) -35(3a-2b)+2(13a-b)=
= -35*3a-35*(-2b)+26a-2b=
= -105a+70b+26a-2b=
= -79a+68b
г) -4*(2к-9)-3*(6к+1)=
= -8к+36-18к-3=
= -26к+33
е) (18m – 24n) – (5m + 2n)=
=18m-24n-5m - 2n=13m-26n
з) –(8a – 13) + 3 * (4 – 5a)=
-8a+13+12-15a= -23a+25
в) 3a*(7-b)-(b-3a)=
=3a*7-3ab-b+3a=21a-3ab-b+3a=24a-3ab+3a
д) (3x-11)*0.2-5*(4-3x)=
=3x*0.2-11*0.2-5*4+5*3x=
=0.6x-2.2-20+15x=15.6x-22.2
ж) -35(3a-2b)+2(13a-b)=
= -35*3a-35*(-2b)+26a-2b=
= -105a+70b+26a-2b=
= -79a+68b
г) -4*(2к-9)-3*(6к+1)=
= -8к+36-18к-3=
= -26к+33
е) (18m – 24n) – (5m + 2n)=
=18m-24n-5m - 2n=13m-26n
з) –(8a – 13) + 3 * (4 – 5a)=
-8a+13+12-15a= -23a+25