Answer:
Step-by-step explanation:
Answer:
x=9
Step-by-step explanation:
combine like terms

4+5=9
9+6x=7x
to get 6x with 7x subtract 6x from both sides as its positive
6x-6x=0
7x-6x=x
9=x
x=9
Answer:
It would be B. Mr. Connor would drive 207 miles altogether on Monday and Tuesday! :)
Step-by-step explanation:
Add 129 + 78 = ???