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Soluções para a tarefa
• Lembre - se Denominadores iguais soma os numeradores , denominadores diferentes é necessário fazer o mmc , em seguida dividir e multiplicar.
A) 1/2+3/2=
4. ÷ 2 = 2 R= 2
--
2 ÷ 2 = 1
B) 4/3+5/3
9 ÷ 3= 3
R= 3
3 ÷ 3 = 1
C) 5/6+2/6
R= 7/6
D) 1/2+1/3
3+2= 5
--- -- R= 5/6
6 6
E) 1/2+1/4
2+1 = 3
--- R= 3/4
4 = 4
F) 1/3+1/4
4+3= 7 R= 7/12
--- ---
12 12
G) 3/4-2/3
9-8 = 1 R= 12
---- --
12 12
H) 2/5-1/3
6-5= 1 R= 15
--- ---
15. 15
I) 6/4-1/7+1/2
42-4+14 = 52 ÷2 = 26÷2= 13
------ ------
28. = 28 ÷2 =14 ÷ 2= 7
R= 13/7
J) 2/9+1/8-1/6
16+9-12 = 13
------ ---
72 72. R= 13/72
K) 1/2+3/1
1+6=7/2 R= 7/2
-----
2
L ) 4- 3 3/4
4-3 3/4
4-15/4
16-15/4
1/4
R= 4
M) 3 3/4-4
4•3= 12
12+3= 15
15/4-4
15-16/4
-1/4
R= -1/4
N) 4/7-6/2
8-42= -34÷2= -17
-----
14 14÷2 = 7
R= -17/7
O) -4/3-2/6
-36-3= - 39 ÷ 3= 13
----- ----
9. 9÷3 = 3
R= 13/3
P) -3/8+2
-3+16 = 13 R= 13/8
------ ----
8 8
Q) -5/2- 2 + -7/9
-15-12-7= 34 ÷2= 17
---------
6 6÷2 = 3
R= 17/3
R) 4/7-1+7/9
36-63+49. = 22/63
--------------
63
R= 22/63
S) 3/2-1/19
57-2=55
------ ----
38 38
R= 55/38
T) 3/2- -2/3
9+4 = 13. R= 13/6
--- ---
6 6
U) -2/-3+3/-5
-10-9= - 19 / 15
-------
15
R= -19/5
V) 1 - 4 + 2 - 1 - 3 + 4 6 - 1 + 11 1
2 9 4 7 2
1 - 4 - 3 + 28 + 6 + 22 + 1
2 9 4 7 2
1 - 4 - 3 + 34 + 23
2 9 4 7 2
126 - 112 - 189 + 1224 + 2898
252
4248 - 301 = 3947
252 252
R= 3947/252
ESPERO TER AJUDADO :)