我是一个小学生，用大白话给我讲解下这道题目---**Chart/Diagram Description:**
The image displays a mathematical puzzle on a green background resembling a chalkboard. It consists of three equations presented vertically, followed by the individual shapes with question marks inside.
- The equations use three different geometric shapes: a square, a triangle, and a circle.
- The equations are:
1. Square + Triangle = 18
2. Triangle + Circle = 22
3. Circle + Square = 16
- Below the equations, the three shapes are shown individually from left to right: Square, Triangle, Circle. Each shape has a red question mark (?) inside it.
**Textual Information:**
Equation 1: Square + Triangle = 18
Equation 2: Triangle + Circle = 22
Equation 3: Circle + Square = 16
Value to find: Square = ?, Triangle = ?, Circle = ?