AYUDA POR FAVOR CON ESTA TAREA
a-46 - (38-(-2)+-9+(42-18+-15)-(-7) =
b-30:(-12+9)-(3.3-12:3)+2)=
c-45:{-2+12:(-7+3)+12-[(-24):(-3).5+7)]+5}=
d-(8.7+5.(-8)):(-4)=
a-46 - (38-(-2)+-9+(42-18+-15)-(-7) =
b-30:(-12+9)-(3.3-12:3)+2)=
c-45:{-2+12:(-7+3)+12-[(-24):(-3).5+7)]+5}=
d-(8.7+5.(-8)):(-4)=
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b- (30:-3)-(9-4)+2 = -10-5+2 = -13
c- 45:(-2+12:-4+12-(+8.5+7)+5) = 45:(-2-3+12-47+5) = 45:-35 = 9/7
d- (56-40):-4 = 16:-4 =-4