Question

456•13+5•456-456•8= calculează in doua moduri 19•(86-16)=

Answer 1

$456*13+5*456-456*8= \\ \\ 456(13+5-8)= \\ \\ 456*10=\boxed{4560} \\ \\ ================== \\ 19*(86-16)= \\ 19*70=\boxed{1330} \\ \\ 19*86-19*16= \\ 1634-304=\boxed{1330}$