+0

# Linear Riddle

0
78
6
+2551

\(-10x-6y=18\)

\(-8x+2y=-8\)

The following message has been changed in order to prevent any cheaters (or because google has good algorithms) on our school club test.

Change one thing and the equation will be true.

What is the change?

Nov 9, 2019
edited by CalculatorUser  Dec 18, 2019

#1
+1

Change    -10x - 6y = 18  to   -10x + 6y =18 !!. How about that?

Nov 9, 2019
#2
+2551
0

Yup!

CalculatorUser  Nov 9, 2019
#4
+1692
0

wait what how?

tommarvoloriddle  Nov 9, 2019
#6
+2551
0

Plug (3, 8) in.

\(-10(3)?6(8)=18\)

\(-30?48=18\)

\(?=+\)

Of course, that's just directly checking guest's answer.

But we plug (3, 8) in to solve, it might take some guessing and checking/

CalculatorUser  Nov 10, 2019
#3
0

Did you know that you gave away the answer by giving the "values of x, y", instead of something like :"the values of x and y are 2 real positive integers"? !!

Nov 9, 2019
#5
+2551
0

It would be insanely hard to get the answer, didn't want to make it too hard...

CalculatorUser  Nov 10, 2019