31.405×7+(18.758-93)÷5 (1820×9×8-76+9383-315-548×7)÷7 по действия

1) 31,405 * 7 + (18,758 - 93) : 5 = 204,9866
1) 18,758 - 93 = -74,242
2) 31,405 * 7 = 219,835
3) -74,242 : 5 = -14,8484
4) 219,835 + (-14,8484) = 204,9866
2) (1820 * 9 * 8 - 76 + 9383 - 315 - 548 * 7) : 7 = 136196
1) 1820 * 9 = 16380
2) 16380 * 8 = 131040
3) 548 * 7 = 3836
4) 131040 - 76 = 130964
5) 130964 + 9383 = 140347
6) 140347 - 315 = 140032
7) 140032 - 3836 = 136196