Question

Henri solved the system of equations below. What mistake did he make in his work?
3x + y = 6
x − 2y = 2

y = 6 − 3x
x − 2(6 − 3x) = 2
x − 12 + 6x = 2
7x − 12 = 2
+ 12 +12

x = 2

3(2) + y = 6
6 + y = 6
−6 −6
y = 0

He should have substituted 6 + 3x.

He combined like terms incorrectly. It should have been 5x instead of 7x.

He made a mistake in distributing −2.

He made no mistake.
Which mistake did he make?

Answer 1

he made no mistake

Answer 2

Ha ha ha..

Answer 3

nothing is wrong with Henri:)

Answer 4

He did not made any mistake..

Wow..

I want to give medal to Henri..

Answer 5

But where I will find him ??

Answer 6

You Just making sure it wasnt just me.