Question

Розкрити дужки і спростіть вираз -(-2.8-14b)+(7b-2)*(-2)

Answer 1

Ответ:

6,8

Пошаговое объяснение:

-(-2.8-14b)+(7b-2)*(-2) = 2,8 + 14b - 14b + 4 = 2,8 + 4 = 6,8

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удачи))

Answer 2

Ответ:

Пошаговое объяснение:

=2,8+14b-14b+4=6,8

Answer 3

To simplify the expression and remove the parentheses, follow these steps:

1. Distribute the negative sign (-) inside the first set of parentheses.
2. Distribute the negative sign (-) inside the second set of parentheses.
3. Perform the operations within each set of parentheses.
4. Combine like terms (if any).

Let's go through each step:

Step 1: Distribute the negative sign inside the first set of parentheses. -(2.8 + 14b) + (7b - 2) * (-2)

Result after distributing the negative sign: -2.8 - 14b + (7b - 2) * (-2)

Step 2: Distribute the negative sign inside the second set of parentheses. -2.8 - 14b - (7b * (-2) - 2 * (-2))

Result after distributing the negative sign: -2.8 - 14b - (7b * (-2) + 4)

Step 3: Perform the operations within the second set of parentheses. -2.8 - 14b - (-14b + 4)

Result after performing the operations: -2.8 - 14b + 14b - 4

Step 4: Combine like terms. Since 14b and -14b cancel each other out, we are left with: -2.8 - 4

Finally, combine the remaining terms: -6.8

The simplified expression is: -6.8