Решите: 1)-8,3•10•x=? 2)4•(-6,5)•m=? 3)-3,2•a•(-3)=? 4)-1 целая 3/5 •m•5/8=? 0,8•t•(3/4)

1) -8.3×10×х= -(8.3×10)х= -83х
2) 4×(-6.5)×m = -26m
3) -3.2×a×(-3) = 9.6a
4) -1 целая 3/5×m×5/8 = -1×3m×1/8 = -3/8m
5) 0.8×t×(3/4) = 0.8t×0.75 = 0.6t