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Find the positive solution of the equation.

6x^((7)/(8))+19=787
Answer:

Find the positive solution of the equation.\newline6x78+19=787 6 x^{\frac{7}{8}}+19=787 \newlineAnswer:

Full solution

Q. Find the positive solution of the equation.\newline6x78+19=787 6 x^{\frac{7}{8}}+19=787 \newlineAnswer:
  1. Isolate variable term: Isolate the term with the variable.\newlineSubtract 1919 from both sides of the equation to isolate the term with the variable xx.\newline6x78+1919=787196x^{\frac{7}{8}} + 19 - 19 = 787 - 19\newline6x78=7686x^{\frac{7}{8}} = 768
  2. Divide by 66: Divide both sides by 66 to solve for x78x^{\frac{7}{8}}.\newline6x786=7686\frac{6x^{\frac{7}{8}}}{6} = \frac{768}{6}\newlinex78=128x^{\frac{7}{8}} = 128
  3. Recognize power of 22: Recognize that 128128 is a power of 22.\newline128=27128 = 2^7
  4. Substitute value: Substitute 272^7 for 128128 in the equation.\newlinex78=27x^{\frac{7}{8}} = 2^7
  5. Raise to power: Raise both sides of the equation to the power of 87\frac{8}{7} to solve for xx.\newline(x78)87=(27)87(x^{\frac{7}{8}})^{\frac{8}{7}} = (2^7)^{\frac{8}{7}}\newlinex=28x = 2^8
  6. Calculate value: Calculate 282^8 to find the value of xx.\newline28=2562^8 = 256

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