Answer:
A.) 2x - 9x - 30 = -6
Step-by-step explanation:
hello !
to solve this system of equations, first, we substitute the equation  to the <em>y </em>variable in the equation
 to the <em>y </em>variable in the equation  . Therefore, we get:
. Therefore, we get:

now, we simplify by multiplying -3 to the variables inside the parenthesis, which, in short, is also called the distributive property. thus, we get:

 
        
             
        
        
        
Answer: d
Step-by-step explanation:
44,4 - (-0,4) = 44,4 + 0,4= 44,8
 
        
                    
             
        
        
        


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 to: 

Your answer would probably be: 

Good luck on your assignment and enjoy your day! 
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