Answer:
c = -a - b + 180
Step-by-step explanation:
Isolate the c. Note the equal sign, what you do to one side, you do to the other. Subtract a and b from both sides
a (-a) + b (-b) + c = 180 (-a) (-b)
c = 180 - a - b
c = -a - b + 180 is your answer
~
Answer:
Number of dimes = 34
Number of nickels = 13
Step-by-step explanation:
Total number of coins = 47
Coins are in the form of nickels and dimes.
Value of a nickel = 5 cents
Value of a dime = 10 cents
Total value of coins = $4.05 or 405 cents
To find:
Number of nickels and dimes?
Solution:
Let number of nickels = 
Money value of nickels = 5
Let number of dimes = 
Money value of dimes = 10
Total value of coins = 
This value is given as equal as 405.
As per question statement, the equations can be written as:

Multiplying equation (2) with 5 and subtracting from equation (1):

Number of dimes = 34
Number of nickels = 47 - 34 = 13
Answer:
Here...
Step-by-step explanation:
<u>x | y</u>
3 | 0
3 | 1
<u><em>The picture is the graph ( I'm not sure why I wrote that you probably already knew... but, I'm not sure if this helps but here.. :D )</em></u>
X=2y-3 Problem: 2y-x=-3
2y-2y-3=-3
combine your variables
then you'll get something like this
-3=-3
So then it's an infinite answer