Mathematics
emanuelciudin
2016-04-11 18:22:51
Consider this system of equations: 2/3x+3/5y=12 (equation A) 5/2y-3x=6 (equation B) The expression that gives the value of x is: The solution for the system of equations is:
ANSWERS
zooman1111
2016-04-12 00:50:28

2x/3+3y/5=12 and 5y/2-3x=6 10x/15+9y/15=12  and 5y/2-6x/2=6 10x+9y=180  and 5y-6x=12 5(10x+9y=180)-9(5y-6x=12) 50x+45y-45y+54x=900-108 104x=792 x=792/104 x=99/13 ... 10x+9y=180, using x from above 990/13+9y=180 (990+117y)/13=180 990+117y=2340 117y=1350 y=1350/117 y=150/13 So the solution is the point (99/13, 150/13)

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