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OpenStudy (anonymous):
18. Solve the system of equations 4x – y = 9 and 3x – 5y = 11. What is the x-coordinate of the solution? A. –2 B. –1 C. 2 D. 3
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OpenStudy (anonymous):
4x-y= 9 ... 1 3x-5y=11 ... 2 2*5: 20x-5y=45 ...2' 2'-1: 17x=34 x=2 Therefore, the x-coordinate of the solution is 2. Also, 8-y=9, y=-1
OpenStudy (anonymous):
Thank you!
OpenStudy (anonymous):
Your welcome(:
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