Question

105:5+400:4
(129-25)×2-20×9
(481-277)×2+(146-98):8

Answer 1

1.
$105 \div 5 + 400 \div 4 = \\ 21 + 100 = 121$
2.
$(129 - 25) \times 2 - 20 \times 9 = \\ 104 \times 2 - 180 = \\ 208 - 180 = 28$
3.
$(481 - 277) \times 2 + (146 - 98) \div 8 = \\ 204 \times 2 + 48 \div 8 = \\ 408 + 6 = 414$

Answer 2

1) 121
2)28
3)414
это всё