If -2x+3y=8 and 4x-3y=20, what is the sum of x and y?  Choices
A) 24	B) 28	C) 18	D) 26	E) 32
Given -2x+3y=8 ---Eq 1   4x -3y =20 -- Eq 2   Sum both eqns we get 2x = 28 =&gt; x = 14   Sub 2x in eq 1 =&gt; -28 + 3y = 8.   =&gt; y = 12   Now X+Y = 12 + 14= 
<gadget id="calculator">12 + 14</gadget>
<output>26</output>
26   Option 26 is correct answer.
<result>D</result>
If -2x+3y=8 and 4x-3y=20, what is the sum of x and y?