Answer:
take the total number of all x variables
Answer:
So, we conclude that Mark is right.
Step-by-step explanation:
If we have the following expression: 15 - (37 + 8) : 3.
We will first divide the value we get in parentheses and then subtract it.
Because sharing is an older mathematical operation than subtraction. Therefore, we get:

So, we conclude that Mark is right.
Answer:
12 is the answer
Step-by-step explanation:
Proportional:
4/7 and 10/17.5
2/3 and 9/12
18/8 and 9/4
NOT proportional:
3/8 and 6/141
7/5 and 27/50
Answer:
y = 6/7
Step-by-step explanation:
-3 = 7(y - 9/7)
simply right side
-3 = 7y - 9
then
-3 + 9 = 7y
6 = 7y
y = 6/7