Solve the equation using substitution?
Yi forgot two factors of 63, which are 3 and 21.
This would make the greatest common factor 21.
Answer:
72
Step-by-step explanation:
A=a+b/2*hA=12
A=12*12/2
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72
Answer:
C.
The equation that represents this situation is -3x = 21. The second number is -7.
Step-by-step explanation: