solve the following equation graphically 4 x minus 5 Y - 20 equals to zero 3 X + 5 Y - 15 = 20
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4x - 5y -20 = 0
=> 4x-5y = 20 .................. equation (1)
3x + 5y -15 = 20
=> 3x + 5y = 20+15
=> 3x + 5y = 35 ................ equation (2)
On solving equation (1) and (2) we get :
4x - 5y = 20
3x + 5y = 35
Answer : x = - 15
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