Rodrigo is looking at the system below.

2x + 3y = 9

x - 8y = 11

To solve, he first multiplied the second equation by two and then subtracted the equations.

Is Rodrigo correct? Justify your answer. If incorrect, describe the error.

Question

Rodrigo is looking at the system below.

2x + 3y = 9

x - 8y = 11

To solve, he first multiplied the second equation by two and then subtracted the equations.

Is Rodrigo correct? Justify your answer. If incorrect, describe the error.

Vocaloid · Answer

if we multiply equation2 by 2 we get

2x - 16y = 22

now look at the other equation

2x + 3y = 9

can you subtract and eliminate any variables?