(1)(-2)(*)(-3)
= -(-2)*(-3)-(-2-3)
= -6+5
= -1
(2)(3(*)4)(*)(-5)
= [-3*4 -(3+4)](*)(-5)
=(-12-7)(*)(-5)
=(-19)(*)(-5)
= -(-19)*(-5)-(-19-5)
= -95+24
= -71
(1)(-2)(*)(-3)
= -(-2)*(-3)-(-2-3)
= -6+5
= -1
(2)(3(*)4)(*)(-5)
= [-3*4 -(3+4)](*)(-5)
=(-12-7)(*)(-5)
=(-19)(*)(-5)
= -(-19)*(-5)-(-19-5)
= -95+24
= -71