Question

(2х-4)-(6х+6) 1.-2(2х+5) 2. -2 (5х+6) 3.7 (2х +5) 4. 1х = 6 Выбрать правильный ответ

Answer 1

(2х-4)-(6х+6)=2х-4-6х-6=-4х-10=-2(2х+5)

Answer 2

Let's simplify the given expression step by step:

1. (2х - 4) - (6х + 6)

First, distribute the negative sign to the terms inside the second parentheses:

= 2х - 4 - 6х - 6

Next, combine like terms:

= (2х - 6х) + (-4 - 6)

= -4х - 10

2. -2(2х + 5)

Distribute -2 to the terms inside the parentheses:

= -2 * 2х - 2 * 5

= -4х - 10

3. 7(2х + 5)

Distribute 7 to the terms inside the parentheses:

= 7 * 2х + 7 * 5

= 14х + 35

4. 1х = 6

This is an equation and not part of the given expression.

Now, let's compare the simplified expressions to the answer choices:

1. -2(2х + 5) => -4х - 10
2. -2(5х + 6) => -10х - 12
3. 7(2х + 5) => 14х + 35
4. 1х = 6 => This is an equation.

The correct answer is 1. -2(2х + 5) => -4х - 10.