When given a value of the variable, we replace each instance of the variable in the problem with that number. In this case, the expression becomes:

After this, we merely need to simplify the answer.


Simplifying 12/2 gives us the answer 6.
Answer:
C) 20x+78
Step-by-step explanation:
9(x-6)+11(x+12)
9x-54+11x+132
20x-54+132
20x+78
Step-by-step explanation:
-7/2 = -28
-7 = -28 × 2
-7 = -56
The Answer is
X= -1
Y= -5/4
Distance = speed* time
D= constant rate *1/4 miles/hour