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=5-48+55+31=43
=43
b) -(-25)-35(-84)+(-6)
=25-35+84-6=88
c)5-5+5-5+5-4+5
=5-5+5-5+5-4+5=6
=6
d)-10-(-10)+(-10)+(-10)+10+10-10
= -10+10-10-10+10+10-10=-10
= -10
Si te sirvió dale a gracias :)