Question

820. 1) -2(x + 3) = 2x - 1; (3) -(3x - 4) = 3x - 8;2) 2(2 - y) = y - 5;4) 2a - (14 - 3a) - -10.Поставлю лайк, высший балл и лутший ответ ​

Answer 1

Пошаговое объяснение:

1)-2x-6=2x-1

-4x=5

-x=5/4

x=-5/4

2)-6x=-12

x=2

3)-3y=-9

y=3

4)2a-24+3a+10

5a=14

a=24/5

Answer 2

Solving the Equations

Let's solve the given system of equations step by step.

1) -2(x + 3) = 2x - 1

To solve this equation, we will start by distributing the -2 on the left side:

-2x - 6 = 2x - 1

Next, we will move all the terms with x to one side and the constant terms to the other side:

-2x - 2x = 1 - 6

-4x = -5

Finally, we will solve for x by dividing both sides of the equation by -4:

x = -5 / -4

x = 5/4 or 1.25

2) (3) - (3x - 4) = 3x - 8

Let's simplify this equation step by step:

3 - 3x + 4 = 3x - 8

Combine like terms:

7 - 3x = 3x - 8

Move all the terms with x to one side and the constant terms to the other side:

-3x - 3x = -8 - 7

-6x = -15

Solve for x by dividing both sides of the equation by -6:

x = -15 / -6

x = 5/2 or 2.5

3) 2(2 + y) = y - 5

Let's solve this equation step by step:

Distribute the 2 on the left side:

4 + 2y = y - 5

Move all the terms with y to one side and the constant terms to the other side:

2y - y = -5 - 4

y = -9

4) 2a - (14 - 3a) - 10

To solve this equation, we will simplify it step by step:

2a - 14 + 3a - 10

Combine like terms:

5a - 24

So, the simplified form of the equation is 5a - 24.

Solutions to the Equations

The solutions to the given system of equations are:

1) x = 1.25 2) x = 2.5 3) y = -9 4) The equation 2a - (14 - 3a) - 10 simplifies to 5a - 24.

I hope this helps! Let me know if you have any further questions.