Answer:
Eleven less than twice a number is nine
Let x represent the number.
2x - 11 = 92x−11=9
Find the number :
\begin{gathered}2x - 11 = 9 \\ \\ 2x = 9 + 11 \\ \\ 2x = 20 \\ \\ \frac{2x}{2} = \frac{20}{2} \\ \\ x = 10 \end{gathered}
2x−11=9
2x=9+11
2x=20
2
2x
=
2
20
x=10
Check to verify :
\begin{gathered}2(10) - 11 = 9 \\ \\ 20 - 11 = 9 \\ \\ 9 = 9\end{gathered}
2(10)−11=9
20−11=9
9=9
