b) 25-(-4)+(+12)+(-13)-(-20)+(-11)-(+7)+(+4)+(-23)-(-30)+(+6)= b ) 25 - ( - 4 ) + ( + 12 ) + ( - 13 ) - ( - 20 ) + ( - 11 ) - ( + 7 ) + ( + 4 ) + ( - 23 ) - ( - 30 ) + ( + 6 ) =
ayudaaa​