solve 9x - 4Y=20 and 7x-3Y=20 by elimination method
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The value of x and y is x=20 and y=40.
Given:
9x - 4y = 20
7x - 3y = 20
To Find:
To solve 9x - 4y = 20 and 7x - 3y = 20 by elimination method.
Solution:
Let's assume, as equation (i)
and as equation (ii)
now, multiply eq.(i) by 3
we get, as equation (iii)
now, multiply eq.(ii) by 4
we get, as equation (iv)
now, after subtracting the equation (iv) and (iii)
we will get the value of
now, put the value in equation (i)
here we get, the value of and .
Thus, the value of x and y is x=20, y=40.
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