√9x+3√21=81
You asked:
Solve the equation \(\sqrt{9} \cdot x + 3 \sqrt{21} = 81\) for the variable \(x\).
MathBot Answer:
The solution is: \[x = 27 - \sqrt{21} \approx 22.417424\]
\[\begin{aligned}3 x + 3 \sqrt{21} &= 81\\3 x &= 81 - 3 \sqrt{21}\\x &= 27 - \sqrt{21}\end{aligned}\]