б) 3(b-2)+2(7b+1)=3b-6+14b+2=17b-4
в)3(7b-1)-5(-3d-5)=21b-3+15d+25=21b+15d+22
е)-3(7x-2)+(x+1)*2=-21x+6+2x+2=-19x+8
з)-3(n+1)-(-4n-1)*(-5)=-3n-3+20n+5=17n+2
к)(-2a-1)*3-(-a-2)*(-4)=-6a-3+4a+8=-2a+5
б) 3(b-2)+2(7b+1)=3b-6+14b+2=17b-4
в)3(7b-1)-5(-3d-5)=21b-3+15d+25=21b+15d+22
е)-3(7x-2)+(x+1)*2=-21x+6+2x+2=-19x+8
з)-3(n+1)-(-4n-1)*(-5)=-3n-3+20n+5=17n+2
к)(-2a-1)*3-(-a-2)*(-4)=-6a-3+4a+8=-2a+5