Найдите значение выражения: 1) (7,891+3,9)+(16,01+2,109); 2) 14,537+(2,143+5,9).
1) (7,891+3,9)+(16,01+2,109) = 11,791 + 18,119=29.91 2) 14,537+(2,143+5,9) = 14,537 + 8,043= 22,58
(7,891+3,9)+(16,01+2,109)=29,91
1) 7,891+3,9=11,791
2) 16,01+2,109=18,119
3) 11,791+18,119=29,91
14,537+(2,143+5,9)=22,586
1) 2,143+5,9=8,049
2) 14,537+8,049=22,586