Question

Resolva as expressões numéricas abaixo:

a) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} =

b) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 =

c) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} =

d) 45 + { 15 – [ ( 10 – 8 ) + ( 7 – 4) – 3 ] – 4 } =

e) 40 + { 50 – [35 – ( 25 +5) – 1 ]} + 7 =

f) 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]} =

Answer 1

Resposta:

a) 25+{ 12 + [ 2 –2+2]} =

25+ { 12 + 2}=

25+14=39

b) { [ 15+12– 2 ] + 5 } – 12=

{25+ 5 } – 12=

30-12=18

c)65 – { 30 – [ 20 –15+ 1 ]}=

65 – { 30 – 6}=

65-24=41

d)45 + { 15 – [2+3-3] – 4}=

45 + { 15 – 2-4}=

45+9=54

e)40 + { 50 – [35 –30 – 1 ]} + 7 =

40 + { 50 – 4} + 7 =

40+ 46+7=93

f)38 – { 20 – [ 22 –8+4]}=

38-{ 20 –18}=

38-2=36