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Standard VI
Mathematics
Estimating Sum or Difference
Question
If
a
=
2
and
b
=
3
, find the value of
2
a
−
3
b
.
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Solution
Verified by Toppr
Given that,
a
=
2
and
b
=
3
To evaluate:
2
a
−
3
b
.
.
.
.
.
.
(
i
)
Substituting the values of
a
and
b
in
(
i
)
, we get:
2
(
2
)
−
3
(
3
)
⇒
4
−
9
=
−
5
∴
2
a
−
3
b
=
−
5
Hence, if
a
=
2
and
b
=
3
, the value of
2
a
−
3
b
is
−
5
.
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