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Mathematics 19 Online
OpenStudy (anonymous):

what is the X coordinate of the solution to the system? -2x+6y=-38 3x-4y=32

OpenStudy (tkhunny):

Have you considered solving the system? Divide the first by -2 and your life may be simplified.

OpenStudy (anonymous):

my choices are a)-2 B)-5 C)4 D)1

OpenStudy (anonymous):

In order to solve they system you need to cancel out the Y from each. What is the LCD for the Y?

OpenStudy (anonymous):

im not sure can you tell me the answer and ill give you the medal

OpenStudy (anonymous):

if you count by 4 and you count by 6 what number do they both come to?

OpenStudy (anonymous):

Where did you go?

OpenStudy (anonymous):

12?

OpenStudy (anonymous):

yes 12. so what do you need to multiply the top line to get 12y and what do you need to multiply the bottom line to get -12y?

OpenStudy (anonymous):

2 and 3

OpenStudy (anonymous):

yes. So multiply them out and do the math. What is left?

OpenStudy (anonymous):

im not sure

OpenStudy (anonymous):

Multiply -2x+6y=-38 by 2

OpenStudy (anonymous):

so the answer is 4

OpenStudy (anonymous):

Yes, good job

OpenStudy (anonymous):

thankyou

OpenStudy (anonymous):

ok

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