if 4y = 12x + 20,4x + 2y = 20 ,what is the value of y? Choose the most appropriate option:
A) 8.5 B) 6 C) 7 D) 8 E) 9
solution:   I---&gt; y = 3x + 5   sub in II   4x + 2(3x + 5) = 20   10x = 10   x = 1   sub x=1 in other equation   4y = 12(1) + 20   y = 8   answer is 8
<result>D</result>
if 4y = 12x + 20,4x + 2y = 20 ,what is the value of y?