Answer:
A). 15
B). -1.2
Step-by-step explanation:
A). [10(x+3)]-20 = 160
 10x+30-20 = 160
 10x+10 = 160
 10x = 160-10
 10x = 150
 x = 150/10
 x = 15
B). 5{[4(8+(5x))]-9} = 85
 5(32+20x+9) = 85
 5(32+9+20x) = 85
 5(41+20x) = 85
 205+100x = 85
 100x = 85-205
 100x = -120
 100x/100 = -120/100
 x = -1.2
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HOPE THIS HELPS!!!
 
 
        
             
        
        
        
Look up what is mean and calculate it.
 
        
             
        
        
        
Answer:
i think it's c but I'm rly not sure on this one...