$B = \dfrac{-60}{12-2} =$

$24-(-15) = $  

$3\times(-1,3) = $

$(-4)\times 9 = $

$-2-3 = $  

$G = 5-4\div 2 + 7 =$

$S = (4-10)\times(3-6) =$

$L = -6\div(-3) -27 =$

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

$F = 1+7\times(-5) =$