Answer:
4
Step-by-step explanation:
13 x 4 = 52 + 7 = 59 
 
        
             
        
        
        
Answer: 
Im in 7th grade and I need some help on a math problem. can I post it? 
 
        
             
        
        
        
For problems like this you can move the y's on the bottem up top by fliping the sign of the exponent (in this case 7 to -7) and MULTIPLYING it with EVERYTHING on top, then because of properties of multplication you can add the exponents to combine them into one term (in this case add 3 and -7 to get -4)

If any of this does not make sense let me know and ill try to clarify better