SOLUTION: x/4-y/12=-5 x/4+y/12=-3

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Question 1111675: x/4-y/12=-5
x/4+y/12=-3
Answer by greenestamps(13214) About Me  (Show Source):
You can put this solution on YOUR website!


(1) By algebra....

(a) Add the two equations; the y variable is eliminated, so solve for x
(b) plug that value of x into either of the original equations and solve for y

(2) By logical reasoning...

(a) The first equation says that if you start at x/4 and SUBTRACT y/12 you end up at -5; the second says that if you start at x/4 and ADD y/12 you end up at -3.
(b) The difference between the two results is 2; that means you went 1 in each direction from x/4; that means y/12 must be 1; so y is 12.
(c) plug y=12 into either equation to solve for x