Answer:
<h2>x= -3</h2>
Step-by-step explanation:


 
        
                    
             
        
        
        
Use a number line to add and subtract. With multiplying and dividing just do it like a whole number. But remember, you take the sign of the larger number (example: -20 + 9 = -29). And when there is two negatives (interger)it equals a positive.I hope this helps!
        
                    
             
        
        
        
I got 25/21 or 1 4/21, but there’s a possibility I could’ve made a mistake in my math so you should double check it just in case.
        
             
        
        
        
Answer:
230
Step-by-step explanation:
20x11=220
20x0.5=10
220+10=230