Question

Resolva essas operações:
• 1004+577+12+4=
• 842+35+31=
•30+60+31=
• 1687-504-381=
• 2001-1999+2006=
• 71-(2+9)=
• 71-2+9 =

Answer 1

1004 + 577 + 12 + 4
1581 + 16
1597

842 + 35 + 31
877 + 31
908

30 + 60 + 31
90 + 31
121

1687 -504 - 381
1183 - 381
802

2001 - 1999 + 2006
2 + 2006
2008

71 - ( 2 + 9)
71 - 11
60

71 - 2 + 9
69 + 9
78

Answer 2

1004+577+12+4=1597
842+35+31=908
30+60+31=121
1687-504-381=802
2001-1999+2006=2008
71-(2+9)=60
71-2+9=78