Question

X
+
5
y
=
20
x
+
3
y
=
14

Answer 1

A) x + 5y = 20

B) x + 3y = 14

Multiplying A) by -1

A) -x -5y = -20 then adding B)

B) x + 3y = 14

-2y = -6

y = 3

x = 5

Explanation: