If 2x + y = 7 and x + 2y = 5, then 2xy/3 =?
Answers
A) 1  B) 2  C) 17/5  D) 18/5  E) 4
2*(x+2y = 5) equals 2x+4y=10   2x+4y=10   - 2x + y= 7   = 3y=3   Therefore Y = 1   Plug and solve...   2x + 1 = 7   2x=6   x=3   (2*3*1)/3   = 6/3= 
<gadget id="calculator">6/3</gadget>
<output>2</output>
2   2
<result>B</result>
If 2x + y = 7 and x + 2y = 5, then 2xy/3 =?