Question

(-100): 20 (-17) = 5 140 (-2): (-4)= * FO (-420): (-60) (-10) = -FO (-30)²: (-10) = (-340): (-2): (-2) = 630 (-70) (-10) = Математика

Answer 1

1. (-100): 20 (-17) = 5
2. 140 * (-2) / (-4) = 35
3. (-420): (-60) (-10) = -7
4. (-30)²: (-10) = 90
5. (-340): (-2): (-2) = 85
6. 630 (-70) (-10) = 441000

Answer 2

It seems like you've provided a series of mathematical expressions and equations. Let's break them down one by one:

1. (-100): 20 (-17) = 5 This expression is a bit unclear. It appears to be a division followed by multiplication, but the use of parentheses is confusing. Please provide more clarity or correct the expression.

2. 140 (-2): (-4) = * It seems like you want to find the result of this expression, but you've left a placeholder symbol (*). To solve this, first perform the division inside the parentheses and then multiply: (140 / -2) / (-4) = (-70) / (-4) = 70 / 4 = 17.5

3. FO (-420): (-60) (-10) = -FO This expression is also a bit unclear. Please provide more context or correct the expression for me to help you solve it.

4. (-30)²: (-10) = To solve this, first calculate the square of -30 and then divide the result by -10: (-30)² = 900 900 / (-10) = -90

5. (-340): (-2): (-2) = To solve this, perform the divisions from left to right: (-340) / (-2) = 170 170 / (-2) = -85

6. 630 (-70) (-10) = Математика It appears you've written "Математика," which means "Mathematics" in Russian. It's not clear what you want to calculate in this case. Please provide a specific mathematical expression for me to solve.

If you have any other mathematical questions or need further clarification, please feel free to ask.