(1)0.75×+×,
=0.75×(),
=0.75×1,
=0.75;
(2)0.25×4÷0.25×4,
=0.25÷0.25×(4×4),
=1×16,
=16;
(3)()×13+4÷17,
=()×13+,
=1313,
=+(),
=1,
=2;
(4)0.6÷+×-60%,
=0.6×+-0.6,
=0.6×(1),
=0.6×2,
=1.2;
(5)50-7.5-1.3-1.2,
=50-(7.5+1.3+1.2),
=50-10,
=40;
(6)(-+)×36,
=363636,
=18-12+6,
=12.