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Byju's Answer
Standard VI
Mathematics
Addition of Fractions
Solve: 2/21 ...
Question
Solve:
2
21
+
3
7
2
5
+
1
3
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Solution
We have,
(1):
2
21
+
3
7
=
2
+
9
21
=
11
21
(2):
2
5
+
1
3
=
6
+
5
15
=
11
15
Hence, this is the answer.
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Similar questions
Q.
Solve:
−
2
21
+
3
7
Q.
Solve
2
x
3
−
3
x
7
=
5
21
.
Q.
Solve the following equations, having given
log
2
,
log
3
, and
log
7
.
21
x
=
2
2
x
+
1
.
5
x
.
Q.
Solve
2
5
×
(
−
3
7
)
−
1
6
×
3
2
+
1
14
×
2
5
Q.
(i) If
A
=
1
-
2
0
2
1
3
0
-
2
1
, find A
−1
. Using A
−1
, solve the system of linear equations
x − 2y = 10, 2x + y + 3z = 8, −2y + z = 7
(ii)
A
=
3
-
4
2
2
3
5
1
0
1
, find A
−1
and hence solve the following system of equations:
3x − 4y + 2z = −1, 2x + 3y + 5z = 7, x + z = 2
(iii)
A
=
1
-
2
0
2
1
3
0
-
2
1
and
B
=
7
2
-
6
-
2
1
-
3
-
4
2
5
, find AB. Hence, solve the system of equations:
x − 2y = 10, 2x + y + 3z = 8 and −2y + z = 7
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