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Solution
Equation 1Â :Â x - 2y = 2
Equation 2Â : 3x + y = 20
Multiplying equation (ii) by 2
=> $$6x + 2y = 40$$ ------(iii)
Adding equations(i) and (iii), we get :
=> $$(x+6x)=2+40$$
=> $$7x = 42$$
=> $$x = \frac{42}{7} = 6$$
Substituting value of $$x$$ in equation (i)
=> $$2y = 6 - 2 = 4$$
=> $$y = \frac{4}{2}=2$$
$$\therefore (x,y)=(6,2)$$
=> Ans - (A)
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