Question

X-Y=4

-2X+6(4-X)=3
-8X+24=3
-24 -24
-8X=-21
X=21/8

Y=11/8
(21/8,11/8)
find the error in the problem.

Answer 1

Answer: You did wrong at Y=11/8! It should be -11/8, not positive 11/8

Explanation:

You solved it all right; just the y is wrong! The reason why y is -11/8 is that a negative and a negative will make a positive, and add an x positive, and you will get a positive answer. If y is negative, the answer would be negative!