Question

8/2x+5=16/20хелп плиз ​

Answer 1

Ответ:

-21/20

Пошаговое объяснение:

4х+5=4/5

4х=4/5-25/5

4х=-21/5

х=-21/20

Answer 2

Ответ:

8/2х+5=0.8

8/2х=0.8-5

8/2х=-4.2

2х=8/-4.2

2х=

Answer 3

To solve the equation (8/2x + 5 = 16/20), we can follow these steps:

Step 1: Simplify the equation by finding the common denominator for the fractions.

The common denominator for 2x and 20 is 20x. Multiply the numerator and denominator of the first fraction (8/2x) by 10 to get the common denominator:

(8/2x) * (10/10) + 5 = 16/20

Now the equation becomes:

(80/20x) + 5 = 16/20

Step 2: Combine the fractions on the left side of the equation.

Since both fractions have the same denominator (20x), we can add the numerators:

80/20x + 5 = 16/20

Step 3: Convert the whole numbers to fractions.

5 can be written as 5/1:

80/20x + 5/1 = 16/20

Step 4: Simplify the fractions.

80/20x can be reduced by dividing both the numerator and denominator by the greatest common divisor (GCD) of 80 and 20, which is 20:

4x + 5/1 = 16/20

Simplify the fractions on the right side by dividing both the numerator and denominator by their GCD, which is 4:

4x + 5/1 = 4/5

Step 5: Get rid of the fractions by multiplying both sides of the equation by the common denominator (5 in this case).

5 * (4x + 5/1) = 5 * (4/5)

This simplifies to:

20x + 25 = 4

Step 6: Solve for x.

Subtract 25 from both sides:

20x + 25 - 25 = 4 - 25

20x = -21

Finally, divide both sides by 20 to isolate x:

20x/20 = -21/20

x = -21/20

Therefore, the solution to the equation (8/2x + 5 = 16/20) is x = -21/20.