Calcule o valor das expressões:
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)]} =
g) 26 + { 12 – [ ( 30 – 18) + ( 4 – 1) – 6 ] – 1 } =
h) 50 – 16 : 8 + 7 =
i) 50 – [37 – ( 15 – 8 ) ] =
j) 32 : 4 : 2 : 2 =
k) 28 + [ 50 – ( 24 – 2 ) – 10 ] =
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