SOLUTION: please help me solve this equation: 18x + 5y = 100

Question 72709: please help me solve this equation:
18x + 5y = 100
Answer by bucky(2189) (Show Source): You can put this solution on YOUR website!
You can't use a single equation to find the values for two variables. To find values of
x and y you need two independent equations because there are two unknowns.
.
What you could do is graph this equation. Then you could say that any point on the graph is
a solution to the equation. The graph of this equation is:
.

.
and the coordinates of any point on the graphed line give x and y values that will make
the equation work.
.
Another thing you could do is to solve for y in terms of the variable x. Or you could
solve for x in terms of the variable y. But again this does not solve the equation
which generally means to find a set of numerical values of x and y.
.
As an example, if you had said that the problem was to solve for y in terms of x, you would
start with:
.

.
then subtract 18x from both sides to get:
.

.
and finally divide all the terms on both sides by 5 to get:
.

.
This is the solution for y in terms of the variable x.
.
Hope this helps you to understand the difficulty with your problem. Perhaps if you provided
more information regarding what you mean by "solve this equation" ...
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