(Q3). Solve the given equation.

x
7
+
y
3
= 5
x
2
-
y
9
= 6

Given:
x
7
+
y
3
= 5 and
x
2
-
y
9
= 6
x+y
= 5 and
x-y
= 6

x + y = …….. (1) and

x – y = …….. (2)

equation (1) × x + y =
equation (2)       ⇒ x - y =

y =
⇒ y =
=

Substituting y = in equation (1) we get

3x + 7() = 105

⇒ 3x = 105 –

⇒ 3x =

⇒ x =
3
=

∴ The solution (x, y) = (, )