Question

3(x 2) = 4x;5(y + 3) = 10;-4(x - 2) = -6​

Answer 1

Ответ:

Пошаговое объяснение:

3(x 2) = 4x; что в скобках?

5(y + 3) = 10;

5y + 15 = 10

5y = 10 - 15

5y = -5

y = -5:5

y = -1

-4(x - 2) = -6​

-4x + 8 = -6

4x = 8 + 6

4x = 14

x = 14:4

x = 3,5

Answer 2

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

1. 3(x + 2) = 4x

First, distribute the 3 on the left side of the equation:

3x + 6 = 4x

Now, subtract 3x from both sides of the equation to isolate the variable x:

6 = 4x - 3x

6 = x

So, x = 6 is the solution to the first equation.

2. 5(y + 3) = 10

First, distribute the 5 on the left side of the equation:

5y + 15 = 10

Now, subtract 15 from both sides of the equation to isolate the variable y:

5y = 10 - 15

5y = -5

Divide both sides by 5 to solve for y:

y = -1

So, y = -1 is the solution to the second equation.

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

First, distribute the -4 on the left side of the equation:

-4x + 8 = -6

Now, subtract 8 from both sides of the equation to isolate the variable x:

-4x = -6 - 8

-4x = -14

Divide both sides by -4 to solve for x:

x = -14 / -4

x = 7/2 or 3.5

So, x = 3.5 is the solution to the third equation.