Question

1) 8 + 3y = 18 - 9y 2) 5 - 6в = 6 - 7в 3) 5( x - 2) = 4x + 6 4) -11a + 7 = -3(4a + 1)

Answer 1

Ответ:

Пошаговое объяснение:

1) 8 + 3y = 18 - 9y

  12у=10

    у=5/6

2) 5 - 6в = 6 - 7в

  -6в+7в=6-5

    в=1

3) 5( x - 2) = 4x + 6

 5х-10=4х+6

 х=16

4) -11a + 7 = -3(4a + 1)

   -11а+7=-12а-3

    а=-10  

Answer 2

1)5/6
2)1
3)16
4)-10
вроде так

Answer 3

Let's solve each of these equations step by step:

1. 8 + 3y = 18 - 9y

First, let's get the variables (y) on one side and the constants on the other side.

Add 9y to both sides: 8 + 3y + 9y = 18 - 9y + 9y

This simplifies to: 8 + 12y = 18

Now, subtract 8 from both sides to isolate the term with y: 8 + 12y - 8 = 18 - 8

This simplifies to: 12y = 10

Finally, divide both sides by 12 to solve for y: (12y)/12 = 10/12

y = 5/6

So, the solution is y = 5/6.

2. 5 - 6в = 6 - 7в

First, let's simplify the equation by moving the terms with в to one side and the constants to the other side.

Add 7в to both sides: 5 - 6в + 7в = 6 - 7в + 7в

This simplifies to: 5 + в = 6

Now, subtract 5 from both sides to isolate в: 5 + в - 5 = 6 - 5

This simplifies to: в = 1

So, the solution is в = 1.

3. 5(x - 2) = 4x + 6

First, distribute the 5 on the left side by multiplying it with each term inside the parentheses:

5x - 10 = 4x + 6

Next, move the terms with x to one side and the constants to the other side.

Subtract 4x from both sides: 5x - 4x - 10 = 4x - 4x + 6

This simplifies to: x - 10 = 6

Now, add 10 to both sides to isolate x: x - 10 + 10 = 6 + 10

This simplifies to: x = 16

So, the solution is x = 16.

4. -11a + 7 = -3(4a + 1)

First, distribute the -3 on the right side by multiplying it with each term inside the parentheses:

-11a + 7 = -12a - 3

Next, move the terms with a to one side and the constants to the other side.

Add 12a to both sides: -11a + 12a + 7 = -12a + 12a - 3

This simplifies to: a + 7 = -3

Now, subtract 7 from both sides to isolate a: a + 7 - 7 = -3 - 7

This simplifies to: a = -10

So, the solution is a = -10.