Question

calcule o valor das seguintes expressões
a) -8-[-2(-12)+3]
b)-4+[-3+(-5+9-2)]}
c)25-{-2+[6+(-4-1)]}
d)10+[-3+1-(-2+6)]}
e)17-{5-3+[8-(-1-3)+5]}

PLS <3

Answer 1

a) -8-[-2(-12)+3]
-8-[-2-12+3]
-8-[-14+3]
-8-[-11]
-8+11 = 3

b)-4+[-3+(-5+9-2)]}
-4+[-3+(2)]
-4+[-3+2]
-4+[-1]
-4 -1 = -5

c)25-{-2+[6+(-4-1)]}
25-{-2+[6+(-5)]}
25-{-2+[6-5]}
25-{-2+[1]}
25-{-2+1}
25-{-1}
25+1 = 26

d)10+[-3+1-(-2+6)]}
10+[-2-(+4)]
10+[-2-4]
10+[-6]
10 - 6 = 4

e)17-{5-3+[8-(-1-3)+5]}
17-{2+[8-(-4)+5]}
17-{2+[8+4+5]}
17-{2+17}
17-{19}
17-19 = -2