Answer:
2r ^2 +61+3x
Step-by-step explanation:
1 Collect like terms.
(3{r}^{2}-{r}^{2})+(58-6+9)+3x(3r
2
−r
)+(58−6+9)+3x
2 Simplify.
2{r}^{2}+61+3x2r
+61+3x
