Answer:
x is equal to -21
Step-by-step explanation:
-21+4=-17
Answer:

Step-by-step explanation:
1. Combine like terms
2y-7y = -5y
-5y=5
2. Divide by -5 and the answer is 
Answer:
56
Step-by-step explanation:
I thibk
B. 13
12^2 + 5^2 = c^2
169 = c^2
13 = c
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12*123.9=1486.8
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