Question

X=1/2x+1/5x+1/7x+3 древнейшие уравнение

Answer 1

X- 1/2x -1/5x- 1/7x=3
x- 35/70x-14/70x-10/70x=3
11/70x=3
11x=210
x=210/11
x=19 1/11

Answer 2

It appears that you are referring to an equation involving the variable "x." However, the equation you provided is not clear, as it seems to be missing some information or contains a possible error.

The equation you wrote is: X = 1/2x + 1/5x + 1/7x + 3

To make it clearer, I'll assume you meant:

X = (1/2)x + (1/5)x + (1/7)x + 3

If this is the equation you intended, then it's a simple linear equation with the variable "x" on one side and constants on the other side. To solve this equation and find the value of "x," you can combine the x terms:

X = (1/2 + 1/5 + 1/7)x + 3

Now, find the common denominator for the fractions:

The common denominator for 2, 5, and 7 is 70.

Now, rewrite the equation:

X = (35/70 + 14/70 + 10/70)x + 3

Combine the fractions:

X = (59/70)x + 3

To isolate "x," subtract 3 from both sides:

X - 3 = (59/70)x

Now, to solve for "x," divide both sides by (59/70):

x = (X - 3) / (59/70)

So, the solution for the equation is x = (X - 3) / (59/70).

If the equation you meant was different, please provide the correct equation so that I can help you further.