Question

СРОЧНО!!!! SOS! 10•2/5x = 7•(-1-1)/-2•(-15)

Answer 1

Вроде бы правильно но хз 

Answer 2

Решение в прикреплённом изображении

Answer 3

Sure, I can help you with that! Let's solve the equation step by step:

10•2/5x = 7•(-1-1)/-2•(-15)

Step 1: Simplify the right-hand side of the equation.

7•(-1-1) = 7•(-2) = -14 -2•(-15) = 30

So, the equation becomes:

10•2/5x = -14/30

Step 2: Further simplify the right-hand side.

-14/30 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 2.

-14/30 = -(14/2)/(30/2) = -7/15

Now, the equation becomes:

10•2/5x = -7/15

Step 3: Isolate the variable x by getting rid of the fraction on the left-hand side.

To do this, we need to multiply both sides by 5x (the denominator of the fraction on the left-hand side) to cancel out the fraction:

5x * (10•2/5x) = 5x * (-7/15)

Step 4: Simplify both sides.

On the left-hand side, the 5x cancels out with the 5x in the denominator:

10•2 = -7/15 * 5x

Step 5: Continue simplifying.

20 = -7/15 * 5x

Step 6: Solve for x.

To find x, we need to isolate it on one side of the equation. We can do this by dividing both sides by -7/15:

x = 20 / (-7/15)

Step 7: Invert and multiply.

When dividing by a fraction, we can invert the fraction and multiply:

x = 20 * (-15/7)

Step 8: Multiply.

x = -300/7

So, the value of x is approximately -42.857.

Please note that I've rounded the value of x to three decimal places. Make sure to check your work and verify the solution. If you have any more questions, feel free to ask!