6 + 2x = x - 6
2x - x = -6 -6
x = -12
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39x6 + 19x12 + 35x7 + 26x9 = x6(39 + 19x6 + 35x + 26x3)The numerical value of that expression completely depends on the value of 'x',and it changes immediately whenever 'x' changes.
(7+4)x6=66
I think you've left out something. Is one of the "x" functions squared?
You must divide the entire problem by 3:3x6+24=3(x6+8)Because x6+8 is prime, 3x6+24=3(x6+8) is the final answer.
To take the square root of any power, just reduce the exponent to one-half of each value.