$A = 4+6\times(-4) =$

$B = 6-8\times 2 + 8 =$

$C = -50\div(-5) -20 =$

$D = (1-7)\times(2-5) =$

$E = 19-30\div 10 + 17 =$

$F = \dfrac{-90}{17-7} =$

$G = 21-5\times(-6) =$

$H = 21+72\div(1-9) =$

$I = 3\times(-8)- 2 \times (-5) =$

$J = \dfrac{-7+63}{7} =$