2x 3y 3 2

Asked by maham237 @ in Mathematics viewed by 249 People

Explain how to form a linear combination to eliminate the variable y for this system. 2x - 3y = 3
5x + 2y = 17

A) Multiply the first equation by 2 and the second equation by 3.
B) Multiply the first equation by −5 and the second equation by 2.
C) Multiply the first equation by −2 and the second equation by 3.
D) Multiply the first equation by 2 and the second equation by −3.

Answered by maham237 @


Alright, this is an easy one!

So we are trying to get rid of the y value so the first equation has -3y. The second equation has 2y. What values would make these equal.

A.) 2*-3y = -6y and 3 * 2y = 6y.

Now take -6y + 6y and that gives you 0.

Thus, the answer is A.) Multiply the first equation by 2 and the second equation by 3.

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