$$ \begin{aligned}35x^3+12x^7-22x+x^3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}12x^7+36x^3-22x\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{35x^3} +12x^7-22x+ \color{blue}{x^3} = 12x^7+ \color{blue}{36x^3} -22x $$ |