Answer:
an expression is numbers, symbols and operators (such as + and ×) grouped together that show the value of something and a equation is an equation says that two things are equal. (7+2=9) this is an equation
 
        
             
        
        
        
Answer:
1416 cm
Step-by-step explanation:
Use calcutor shows everthinh
 
        
             
        
        
        
Yes I love this problem so good
        
             
        
        
        
Group the xs and the ys, 17+5= 22x 3+1=4y so y=4 and x=22.
        
             
        
        
        
The answer is 100! 
Hope this helped!!!