resolva as expressões : a) -(-7 )+ (+15 )- (+32 ) + ( - 40 ) _ ( - 25) + ( + 40 ) =
b) - 497 - (-801 ) + ( - 92 ) + ( - 55 ) + ( - 2 ) - ( + 1 ) =
c) ( -7 + 2 - 11 ) . ( - 1 ) + ( - 27 ) : ( - 3) =
Soluções para a tarefa
Respondido por
2
a) -(-7 )+ (+15 ) - (+32 ) + ( - 40 ) - ( - 25) + ( + 40 ) =
\/ \/ \/ \ / \ / \ /
+7 +15 -32 -40 +25 +40 =
\ / \ / \ /
+22 -72 +65 =
\ / |
-50 +65 =
\ /
+15
...
b) - 497 - (-801 ) + ( - 92 ) + ( - 55 ) + ( - 2 ) - ( + 1 ) =
\ / \ / \ / \ / \ /
-497 +801 -92 -55 -2 -1 =
\ / \ / \ /
+304 -147 -3 =
\ /
+157 -3 =
\ /
+154
...
c) ( -7 + 2 - 11 ) . ( - 1 ) + ( - 27 ) : ( - 3) =
\ / | \ /
( -5 -11 ) . ( -1 ) + (+9) =
\ /
-16 . -1 +9 =
\ /
+16 +9 =
\ /
+25
\/ \/ \/ \ / \ / \ /
+7 +15 -32 -40 +25 +40 =
\ / \ / \ /
+22 -72 +65 =
\ / |
-50 +65 =
\ /
+15
...
b) - 497 - (-801 ) + ( - 92 ) + ( - 55 ) + ( - 2 ) - ( + 1 ) =
\ / \ / \ / \ / \ /
-497 +801 -92 -55 -2 -1 =
\ / \ / \ /
+304 -147 -3 =
\ /
+157 -3 =
\ /
+154
...
c) ( -7 + 2 - 11 ) . ( - 1 ) + ( - 27 ) : ( - 3) =
\ / | \ /
( -5 -11 ) . ( -1 ) + (+9) =
\ /
-16 . -1 +9 =
\ /
+16 +9 =
\ /
+25
nininhaterra:
obrigada
Respondido por
0
Vamos lá.
a)
-(-7 )+ (+15 )- (+32 ) + ( - 40 ) _ ( - 25) + ( + 40 ) =
7 + 15 - 32 - 40 + 25 + 40
87 - 72
15
b)
- 497 - (-801 ) + ( - 92 ) + ( - 55 ) + ( - 2 ) - ( + 1 ) =
- 497 + 801 - 92 -55 - 2 - 1
- 647 + 801
154
c)
( -7 + 2 - 11 ) . ( - 1 ) + ( - 27 ) : ( - 3) =
- 7 . (-1) + 9
7 + 9
16
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