Which statement correctly explains how Andre could find the solution to the following system of linear equations using eliminati

Question

2 years ago

14

Which statement correctly explains how Andre could find the solution to the following system of linear equations using eliminati

on?
A.-) Multiply the first equation by –7 and the second equation by 8, and then subtract.
B.-) Multiply the first equation by -7 and the second equation by 8, and then add.
C.-) Multiply the first equation by 2 and the second equation by 9, and then add.
D.-) Multiply the first equation by –2 and the second equation by 9, and then subtract.

Mathematics

2 answers:

Mandarinka [93] · Answer 1 · 2022-08-29T19:50:37+03:00

Mandarinka [93]2 years ago

8 0

Answer:

b

Step-by-step explanation:

edg 2020

swat32 · Answer 2 · 2022-08-29T18:05:59+03:00

Answer:

The correct answer is B.

Step-by-step explanation:

Multiply the first equation by -7, and the second equation by 8, and then add.

What you're trying to do is cancel them out so they have to opposite signs in order for them to cancel out. You can't do that if the signs are the same, which is what option A suggests doing. B is the correct answer.