Answer:
no 15x — 20xy as 5x(3— 4xy is not correct
Step-by-step explanation:
 15x — 20xy ≠ 5x(3— 4xy)
there are not equal because 5x(3 - 4xy) = 
when you simplify the bracket, you will have 
15x - 20x²y
 
        
             
        
        
        
Answer:
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12 of them are black
2 of them is yellow 
2 of them are both