Answer:
![x = 10](https://img.qammunity.org/2020/formulas/mathematics/high-school/1qvz7c2ob0nxur0rmw3vk1un5g2s7k9ppg.png)
Explanation:
If you see the small triangle, you are given three numbers. While in the second triangle, you are given two.
The bottom number for the first triangle is 3, the second is 6
4 for the right side, 8 for the second
See a solution.
The triangle is being increased by 2.
![3 * 2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/k1jceu4qgmi6flsstgby11zsuxbrxomxs0.png)
![6](https://img.qammunity.org/2020/formulas/mathematics/middle-school/hmxwiqj71wo6x94cutfqa231m9cnl04fjd.png)
![4 * 2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7x582jnqhhijnk3e31533rouv1qn27eroz.png)
![8](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4iub72r6bba9vrh2lcm3m4nyif2vj622z0.png)
Do the same for 5,
![5 * 2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/oty5rw97pcd5ogonbgkffjx92zk2ogb5vx.png)
![10](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ohhrik2xu4iejtj9yakix4wg9ve0oquu67.png)