Question

(X)+(X-25%)=28 как решить?

Answer 1

Ответ:х=16

Пошаговое объяснение:

Х+(х-25%)=28

25% от х равно х÷100×25

Х+(х-(х÷100×25))=28

Обе части уравнения нужно умножить на 100 и разделить на 25

4х+(4х-х)=112

4х+4х-х=112

7х=112

Х=112÷7

Х=16

Проверка

16+(16-4)=28

16+12=28

Answer 2

To solve the equation (X) + (X - 25%) = 28, follow these steps:

Step 1: Convert the percentage to a decimal. 25% is equivalent to 0.25.

Step 2: Simplify the equation by adding the terms with X together.

Step 3: Solve for X.

Let's go through the steps in detail:

Step 1: Convert the percentage to a decimal: 25% = 25/100 = 0.25

Step 2: Simplify the equation: (X) + (X - 0.25) = 28

Step 3: Solve for X: Combine like terms on the left side of the equation: 2X - 0.25 = 28

Now, we want to get rid of the constant term (-0.25) on the left side. We can do this by adding 0.25 to both sides of the equation:

2X - 0.25 + 0.25 = 28 + 0.25

Simplify:

2X = 28.25

Finally, solve for X by dividing both sides by 2:

X = 28.25 / 2 X = 14.125

So, the solution to the equation is X = 14.125.