a)
(-7+5)×(-16:4+12:3)=
-2×(-4+4)=
-2×0=
0
b)
(-2)²×(-15:3+4)=
(-2)²×(-5+4)=
(-2)²×-1=
2²×-1=
4×-1=
-4
[tex]c) \\ \\ ( - 13 + 5) : {( - 2)}^{3} + {( - 1)}^{5} = \\ \\ - 8 : { - 2}^{3} + {( - 1)}^{5} = \\ \\ - 8 : - 8 - {1}^{5} = \\ \\ - 8 : - 8 - 1 = \\ \\ 1 - 1 = \\ \\ 0 [/tex]
d)
-3+2×(-6:2+1)=
-3+2×(-3+1)=
-3+2×-2=
-3-4=
-7
