56,2*29+60,3*41+43,8*29+39,7*41 Помогите пж

Question

56,2*29+60,3*41+43,8*29+39,7*41
Помогите пж

Answer 1

(56.2*29 + 43.8*29)+(60.3*41+39.7*41)=
=29(56.2+43.8)+41(60.3+39.7)=
=29*100+41*100=100(29+41)=100*70=7000