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Problem
Problem
Find the sum of the abscissas of all the points on the line
x
+
y
=
4
x + y = 4
x
+
y
=
4
that lie at a unit distance from the line
4
x
+
3
y
−
10
=
0
4x + 3y - 10 = 0
4
x
+
3
y
−
10
=
0
.
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