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Mathematics
Mathematics
Problem
The variables
a
a
a
and
b
b
b
satisfy the equations (i)
a
+
6
=
1
a + 6 = 1
a
+
6
=
1
(ii)
b
−
4
=
−
9
b - 4 = -9
b
−
4
=
−
9
Find the value of
a
−
b
a - b
a
−
b
.
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