Applicare la formula: $\ln\left(ab\right)$$=\ln\left(a\right)+\ln\left(b\right)$, dove $a=2$ e $b=x$

Applicare la formula: $x+a=b$$\to x=b-a$, dove $a=\ln\left(2\right)+\ln\left(x\right)$, $b=5$, $x+a=b=\ln\left(2\right)+\ln\left(x\right)+y=5$, $x=y$ e $x+a=\ln\left(2\right)+\ln\left(x\right)+y$

Applicare la formula: $-\left(a+b\right)$$=-a-b$, dove $a=\ln\left(2\right)$, $b=\ln\left(x\right)$, $-1.0=-1$ e $a+b=\ln\left(2\right)+\ln\left(x\right)$