2º ESO - Matemáticas - SM - 3 = FRACCIONES y DECIMALES - 7 = Operaciones combinadas con fracciones
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32. a) =+−=+−=×+×−=+×− −
60
12465
5
1
15
1
12
13
3
1
5
3
5
4
12
1
12
133:
10
6
5
412
12
13 1 60
73
b) =−+=−+=××−×+=×−×+45
189290
5
21
45
22
2
7
1
3
5
2
9
8
5
42
2
7
3
1:
5
2
9
8
25
162
45
97
c) =−=−=××××−×=×−
4
2021
1
5
4
21
183
654
1
3
4
7
6
1:
8
5
3
4
9
1:
4
7
4
1
d) ( ) =+×
+−=+×+−=++−=+×+×−−
− 132
1
18
5
9
81
3
2
2
1
18
5
9
81
3
2
18
5
9
81
3
22
2
5
9
1
9
856
532
=×=×
××==++−=525
2
2
115
32
1153
288
495
288
288332256
32
55
e) =−+=−+=××
××−+=
××−+−
36
15484
12
5
3
4
9
1
465
2512
2
3:2
9
1
2
5
6
1
5
2
4
9:23
22
36
37
f) =−−+=−−+=−
−×+−
72
516284100
72
5
4
9
6
7
3
5
5
9:
8
1
3
2
2
7
3
1
3
52
72
17
33 a) =+−=+−=×+−=
−×+
+−40
12645120
20
63
8
93
5
9
4
7
8
93
5
12
4
71
8
13
40
201
b) =+−+=
−×−+=
×−×−×+15
1
5
2
12
35
9
4
15
2
5
4
2
1
12
35
9
4
5
2
3
1
5
4
2
1
3
7
4
5
9
4
==+−+=180
545
180
127252580
36
109
c) =−+=×−×+
=−
−×+
−−
32
9
56
21
64
1
16
9
2
1
14
7
4
3
8
1
9
16:
2
1
7
102
4
31
8
9212
==−+=448
49
448
1261687
64
7
d) =
×−×−=
−×−×−=
−×−×−5
3
4
71
5
2
5
18
5
1
5
4
4
71
5
2
5
18
5
1
10
8
4
71
5
2
5
18
=−=−=××−=−×−=
50
1180
50
1
5
18
205
12
5
18
20
2120
5
2
5
18
50
179
e) =+−=+×−=+−×−=+
−×− 275
4
5
182
15
1
5
4
5
182
30
35
5
4
5
182
10
1
6
1
5
4
5
18
=+−=75
1504270
75
416
f) =
+×××−=
+×+×−=
+×
+×−6
5
418
32335
6
5
4
3
18
91435
6
5
4
3
2
1
9
735
=−=−=+×−=
+×−=8
4340
8
435
24
202335
6
5
24
2335
8
3−
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