Take second equation here, 
2x + 9 = -12
2x = -12 - 9
2x = -21
Multiply by 2, 
4x = -42
Now, substitute the vaue of 4x in 1st equation, 
-42 - y = 2
-y = 2 + 42
y = -44
In short, Your Answer would be -44
Hope this helps!
        
             
        
        
        
Answer:
 12350%
Step-by-step explanation:
. 76 - 34 = 42
. 42 divided by 34 = 1.23529411765
. 1.23529411765 multiplied by 100 = 123.529411765
. 123.529411765 ≈ 123.5 * 100 = 12350%
 
        
             
        
        
        
Answer:
Step-by-step explanation:
1
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8 exponent 9
 
        
             
        
        
        
Answer:
n = -3
Step-by-step explanation:
2 - 2n = 3n + 17
-2                -2
-2n = 3n + 15
-3n    -3n
<u>-5n = 15</u>
-5       -5
n = -3
Hope this helps you!!! :)