Jawabanmu

2014-03-10T23:02:01+07:00
A transpos =   \left[\begin{array}{ccc}3&2\\0&5\\\end{array}\right]

 \left[\begin{array}{ccc}3&2\\0&5\\\end{array}\right]    \left[\begin{array}{ccc}x&-1\\y&1\\\end{array}\right]   \left[\begin{array}{ccc}0&-1&\\-15&5\\\end{array}\right]

3x+2y = 0                 5y = -15  ⇒ y= -3
3x + 2(-3) = 0
3x = 6
x =  2

2x+y = 4-3 = 1
2014-03-10T23:02:12+07:00
Karena tranpos A dikalikan B adalah C, maka y= -3 dan x= 2, jadi jawabannya 1