Х+х-9х+14=86

To solve this equation for x, first simplify the left side by combining like terms:

х + х - 9х + 14 = 86

(1 + 1 - 9)x + 14 = 86 (-7)x + 14 = 86

Now, isolate x by subtracting 14 from both sides:

-7x + 14 - 14 = 86 - 14 -7x = 72

Next, divide both sides by -7 to solve for x:

-7x / -7 = 72 / -7 x = -72 / 7

x is now solved as a fraction, and it can be simplified if needed:

x = -10 2/7 or approximately -10.2857

Thus, the solution to the equation x + x - 9x + 14 = 86 is x = -10 2/7.