E= -4/9x8/1 = (-4x8)/(9x1)= -32/9
F = -(8x2)/(9x3)= -16/27
G= -(15x12)/16x35 = -(5x3 x4x3)/(4x4x7x5) =9/28
H=(4x9x28)/(21x12x27)=(4x3x3x7x4)/(7x3x4x3x9x3)=4/27
