determine o termo que falta para que as fraçoes sejam equivalentes a)3/8=?/96 b)7/12=98/? c)12/63=?/21 d)9/8=?/272
Soluções para a tarefa
Respondido por
23
a)
3 x
---- = ------
8 96
3.96 = 8x
3.96
-------- = x
8
3.12 = x
36 = x
x = 36
Resp.: 36
------
96
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)
7 98
---- = -----
12 x
7x = 12.98
x = 12.98
--------
7
x = 12.14
x = 168
R.: 98
-------
168
*****************************
c)
12 x
----- = -----
63 21
12.21 = 63x
63x = 12.21
x = 12.21 (:21)
-------
63 (:21)
x = 12.1
-------
3
x = 12/3
x = 4
R.: 4
------
21
______________________________
d)
9 x
---- = --------
8 272
9.272 = 8x
8x = 9.272
x = 9.272 (:8)
---------
8 (:8)
x = 9.34
x = 306
Resp.: 306
---------
272
3 x
---- = ------
8 96
3.96 = 8x
3.96
-------- = x
8
3.12 = x
36 = x
x = 36
Resp.: 36
------
96
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)
7 98
---- = -----
12 x
7x = 12.98
x = 12.98
--------
7
x = 12.14
x = 168
R.: 98
-------
168
*****************************
c)
12 x
----- = -----
63 21
12.21 = 63x
63x = 12.21
x = 12.21 (:21)
-------
63 (:21)
x = 12.1
-------
3
x = 12/3
x = 4
R.: 4
------
21
______________________________
d)
9 x
---- = --------
8 272
9.272 = 8x
8x = 9.272
x = 9.272 (:8)
---------
8 (:8)
x = 9.34
x = 306
Resp.: 306
---------
272
Respondido por
8
Ola Raphael
a) 3/8 = x/96
8x = 3*96
x = 3*96/8 = 36
b) 7/12 = 98/x
7x = 12*98
x = 12*98/7 = 168
c) 12/63 = x/21
63x = 12*21
x = 12*21/63 = 4
d) 9/8 = x/272
8x = 9*272
x = 9*272/8 = 306
a) 3/8 = x/96
8x = 3*96
x = 3*96/8 = 36
b) 7/12 = 98/x
7x = 12*98
x = 12*98/7 = 168
c) 12/63 = x/21
63x = 12*21
x = 12*21/63 = 4
d) 9/8 = x/272
8x = 9*272
x = 9*272/8 = 306
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