Question

9n-(8+5n)=
m+(2m-3)=
-(4x+3y)-(-8x+7y)=
1,5(2x-3)=
-(8z+1)+5(4z-3)=
a(10b+9)-a(b-1)=

Answer 1

Ответ:

9n-(8+5n)=9n-8-5n=4n-8=4(n-2)

m+(2m-3)=m+2m-3=3m-3=3(m-1)

-(4x+3y)-(-8x+7y)=-4x-3y+8x-7y=4x-10y

1,5(2x-3)=3x-4,5

-(8z+1)+5(4z-3)=-8z-1+20z-15=12z-16=4(3z-4)

a(10b+9)-a(b-1)=10ab+9a-ab+a=9ab+10a

Пошаговое объяснение: