efetue as operações operações indicadas
a)1/2+1/3
b)1/2+1/3+5/6
c)1/2-1/3
d)5/6-1/2
presisos de calculos
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a)
1/2+1/3
1 + 1 3 + 2 5
------- ------ = --------- = -----
2 3 6 6
b)
1/2+1/3+5/6
1 + 1 + 5 3.1 + 2.1 + 1.5 3 + 2 + 5
------ ------ ----- = ----------------------- = ----------------
2 3 6 6 6
5 + 5 10 (:2) 5
--------- = ------- = ------
6 6 (:2) 3
c)
1/2-1/3
1 - 1 3 - 2 1
----- ----- = -------- = -----
2 3 6 6
d)
5/6-1/2
5 - 1 1.5 - 3.1 5 - 3 2 (:2) 1
----- ----- = ------------ = --------- = ---- = -----
6 2 6 6 6 (:2) 3
1/2+1/3
1 + 1 3 + 2 5
------- ------ = --------- = -----
2 3 6 6
b)
1/2+1/3+5/6
1 + 1 + 5 3.1 + 2.1 + 1.5 3 + 2 + 5
------ ------ ----- = ----------------------- = ----------------
2 3 6 6 6
5 + 5 10 (:2) 5
--------- = ------- = ------
6 6 (:2) 3
c)
1/2-1/3
1 - 1 3 - 2 1
----- ----- = -------- = -----
2 3 6 6
d)
5/6-1/2
5 - 1 1.5 - 3.1 5 - 3 2 (:2) 1
----- ----- = ------------ = --------- = ---- = -----
6 2 6 6 6 (:2) 3
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