№1076
1)2а+2*3b-2*7c=2a+6b-14c
2)0.4*1.3x-04*0.5y-0.4*1.3=0.52x-0.2y-0.52
3)0.8a-4d*(-0.8)-3p*0.8=0.8a+3.2d-2.4p
4)-0.4a*(-4b)-0.4a*3b-0.4a*(-1.1c)=1.6ab-1.2ap+0.44ac
5)-m*(-k)-29mn-m*(-38.9)=km-29mn+38.9m
6)(0.1+0.3x-2y)(-10a)=0.1*10a-0.3x*10a-2y(-10a)=-a-3ax+20ay