Question

8 (x - 4) + 3 (2 - x) = - 21Решите уравнение ​

Answer 1

Ответ:

Пошаговое объяснение:

8(х-4)+3(2-х)=-21

8х-32+6-3х=-21

5х-26=-21

5х= -21+26

5х=5

х=5÷5

х=1

Answer 2

8x - 32 + 6 - 3x = - 21

8x - 3x= - 21 + 32 - 6

5x = 5

x = 1

Answer 3

To solve the equation 8(x - 4) + 3(2 - x) = -21, follow these steps:

Step 1: Distribute the numbers outside the parentheses to the terms inside the parentheses. Step 2: Simplify the equation by combining like terms. Step 3: Solve for the variable x.

Let's go through each step:

Step 1: Distribute the numbers

8(x - 4) + 3(2 - x) = -21

Distribute the 8 and 3:

8 * x - 8 * 4 + 3 * 2 - 3 * x = -21

Step 2: Simplify the equation

Now simplify by combining like terms:

8x - 32 + 6 - 3x = -21

Step 3: Solve for x

Next, combine the x terms:

(8x - 3x) = 5x

Now, combine the constants:

(-32 + 6) = -26

The equation now becomes:

5x - 26 = -21

To isolate x, add 26 to both sides of the equation:

5x = -21 + 26

5x = 5

Finally, divide both sides by 5 to solve for x:

x = 5/5

x = 1

So, the solution to the equation is x = 1.