We can see all this here: [katex]\frac{12}{7} + \frac{3}{7} = \frac{15}{7}[/katex]
We can see all this here: [katex]y = \frac{3x + 2}{x^2 + 1}[/katex]
We can see all this here: [katex display=true]y = \frac{3x + 2}{x^2 + 1}[/katex]
We can see all this here: [katex]\frac{12}{7} + \frac{3}{7} = \frac{15}{7}[/katex]
We can see all this here: [katex]y = \frac{3x + 2}{x^2 + 1}[/katex]
We can see all this here: [katex display=true]y = \frac{3x + 2}{x^2 + 1}[/katex]