Question

s)-20-4-[4-6+10.]
t)+2+[+8-5-(+7-2).-7]
u)25-[8-6+[9-(4-2)-5]]

podem mim explicar pfv

Answer 1

s) -20-4-[-2+10]

-20-4-8

-32

t) 2+[8-5-5-7]

2+(-9)

-7

u) 25-[8-6+[9-2-5]]

25-[8-6+2]

25-[2+2]

25-4

21