$$ \begin{aligned}-19x+5+19x& \xlongequal{ } -\cancel{19x}+5+ \cancel{19x} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5\end{aligned} $$ | |
① | Combine like terms: $$ \, \color{blue}{ -\cancel{19x}} \,+5+ \, \color{blue}{ \cancel{19x}} \, = 5 $$ |