Question

Reglas de signos
-12-40= -45-14=
48-26= -98+71=
-72+21= -17+18=
39+96= 86+17=
76-15= 74-12=
-51+19= -49+98=

Answer 1

Explicación paso a paso:

-12-40= -52 -45-14= -59

48-26= +22 -98+71= -27

-72+21= -51 -17+18= +1

39+96= +135 86+17= +103

76-15= +61 74-12= +62

-51+19= -32 -49+98= 49