Question

find x and y if 4x + 8y =10 and 16x + 4y = 20

Answer 1

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Answer 2

4x+8y=10........1
16x+4y=20.........2
subtrcting eq. 2 from 1...& multiply by 2 in eqn 2.
we get,
18x= 30
x=5/3
putting the value of x in eqn 14*5/3+8y=10
y =-5/3
Ans.