Answer:
The pair of number is x=3 and y = 2
Explanation:
Given:
6X plus Y equals 20
X equals 2Y -1
To Find:
The number X and Y
Solution:
6X plus Y equals 20 can be written as
------------------(1)
X equals 2Y -1 can be written as
-------------------(2)
Now lets solve equation (1) and (2)
multilply
by 2 , we get
-------------------(3)
Adding (2) and (3)
------------------------------
------------------------------
x =3
Substitute x = 3 in eq(2)
y = 2