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

Answer 3

To solve this mathematical expression, follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition, and Subtraction):

Step 1: Calculate the expression inside the parentheses first: (129 - 25) × 2 = 104

Step 2: Continue calculating the expression inside the parentheses: (481 - 277) × 2 = 208

Step 3: Divide the result of Step 1 by 8: 104 ÷ 8 = 13

Step 4: Calculate the expression inside the first set of parentheses: 105:5 + 400:4 = 21 + 100 = 121

Step 5: Calculate the expression inside the second set of parentheses: 208 - 20 × 9 = 208 - 180 = 28

Step 6: Add the result from Step 5 to the result from Step 4: 121 + 28 = 149

Step 7: Multiply the result from Step 3 by the result from Step 6: 13 × 149 = 1937

The final result of the expression is 1937.