2,71•12,6+87,4•2,71= 2,71*(12,6+87,4) = 2,71*100= 271.
20,8•17,9-20,8•7,9= 20,8*(17,9-7,9)= 20,8*10= 208.
3,08•17,9-3,08•7,9= 3,08*(17,9-7,9)= 3,08*10= 30,8.
7,5•8,7+2,5•(9,4-2,7)= 7,5*8,7+2,5*6,7= 82.
2,71•12,6+87,4•2,71= 2,71*(12,6+87,4) = 2,71*100= 271.
20,8•17,9-20,8•7,9= 20,8*(17,9-7,9)= 20,8*10= 208.
3,08•17,9-3,08•7,9= 3,08*(17,9-7,9)= 3,08*10= 30,8.
7,5•8,7+2,5•(9,4-2,7)= 7,5*8,7+2,5*6,7= 82.