РЕШИТЕ,ПРОШУ.
-7/9a=1 8/27 И -3/8y= -9/16

-7/9a=1 8/27a=1 8/27 ÷ (-7/9) = 35/27 × (-9/7) = - 35×9/27×7=-315/189=-105/63=-35/21=-5/3-3/8y= -9/16y= -9/16 ÷ (-3/8) = 9/16 × 8/3 = 9×8/16×3 = 72/48 = 36/24 = 18/12 = 6/4 = 3/2 или 1,5