Question

5x+2x+145=202:9+65,2

Answer 1

Ответ:

$7x + 145 = \frac{202}{9} + \frac{326}{5} \\ 7x + 145 = \frac{3944}{45} \\ 7x = \frac{3944}{45} - 145 \\ 7x = - \frac{2581}{45} \\ x = - \frac{2581}{315} = - 8 \frac{61}{315}$

Answer 2

Ответ у Полины это по-моему правильно

Answer 3

To solve the equation 5x + 2x + 145 = 202:9 + 65,2, we need to simplify both sides and combine like terms.

First, let's simplify the right side of the equation: 202:9 + 65,2 = 22,44 + 65,2 (Note: I'm assuming you used a comma as a decimal separator.) = 87,64

Now, let's simplify the left side of the equation: 5x + 2x + 145 = 7x + 145

The equation now becomes: 7x + 145 = 87,64

To isolate x, we'll subtract 145 from both sides: 7x + 145 - 145 = 87,64 - 145 7x = -57,36

Finally, to solve for x, we'll divide both sides by 7: 7x/7 = -57,36/7 x = -8,1943 (rounded to four decimal places)

Therefore, the solution to the equation 5x + 2x + 145 = 202:9 + 65,2 is x ≈ -8.1943.