Question

VALENDO 40 PONTOS
Me ajudem pffv pra agora!

Resolva as expressões:

a) (-15+4) + [-18+(-3-7+5)]

b) -1 + [1+(1-1)-11]

c) -1 + (-2+5) + [-4+(-6+5-8)]

d) (-3) + (+11) + (-8)

e) (-12) + (-3) + (+9)

f) (-5) + (-1) + (-26)

g) (+11) + (-4) + (+2)

h) 53 - {20-[30-(15-1+6)+2]}

i) 62 - {16-[7-(6-4)+1]}

j) 20 - {8+[3+(8-5)-1] +6}

Answer 1

A)(-15+4)+[-18+(-3-7+5)]
-11+[-18+(-10+5)]
-11+[-18-5]
-11-23
-34

B)-1+[1+(1-1)-11]`
-1+[1+0-11]
-1+[1-11]
-1-10
-11

C)-1+(-2+5)+[-4+(-6+5-8)]
-1+3+[-4+(-14+5)]
-1+3+[-4-9]
+2-13
-11

D)(-3)+(+11)+(-8)
-3+11-8
11-11
0

E)(-12)+(-3)+(+9)
-12-3+9
-15+9
-6

F)(-5)+(-1)+(-26)
-5-1-26
-32

G)(+11)+(-4)+(+2)
11-4+2
+9

h)53-{20-[30-(15-1+6)+2]}
53-{20-[30-20+2]}
53-{20-12}
53-8
+45

i)62-{16-[7-(6-4)+1]}
62-{16-[7-2+1]}
62-{16-6}
62-10
+52

j)20-{8+[3+(8-5)-1]+6}
20-{8+[3+3-1]+6}
20-{8+5+6}
20-19
+1

Answer 2

a) (-15+4) + [-18 + (-3-7+5)] =

= (-15 + 4) + [-18 + (-5)]

= -11 + [-18-5]

= -11 + [-23]

= -11-23

= -34

b) -1 + [1 + (1-1) -11] =

= -1 + [1 + (-11)]

= -1 + [1-11]

= -1 + [-10]

= -1-10

= -11

c) -1 + (-2+5) + [-4 + (-6+5-8)] =

= - 1 + 3 + [-4 + (-9)]

= 2 + [-4-9]

= 2 + [-13]

= 2 -13

= -11

d) (-3) + (+11) + (-8) =

= -3 + 11 -8 =

= 8 -8

= 0

 

e) (-12) + (-3) + (+9) =

= -12 -3 + 9

= -15 + 9

= -6

f) (-5) + (-1) + (-26) =

= -5 -1 -26

= -32

g) (+11) + (-4) + (+2) =

= 11 -4 + 2

= 11 -2

= 9

h) 53 - {20 - [30 - (15-1+6) + 2]} =

= 53 – {20 – [30 – (20) + 2]}

= 53 – {20 – [30 -20 + 2]}

= 53 – {20 – [12]}

= 53 - {20 -12}

= 53 – {8}

= 53 -8

= 45

i) 62 - {16 - [7 - (6-4) + 1]} =

= 62 – {16 – [7 – (2) + 1]}

= 62 – {16 – [7 -2 + 1]}

= 62 – {16 – [6]}

= 62 – {16 -6}

= 62 – {10}

= 62 -10

= 52

j) 20 - {8 + [3 + (8-5) -1] + 6} =

= 20 – {8 + [3 + 3 -1] + 6}

= 20 – {8 + 5 + 6}

= 20 – {19}

= 20 -19

= 1