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  • Solve this by substitution method.11x+15y+23=07x-2y-20=0

Solve this by substitution method.11x+15y+23=07x-2y-20=0

Answers (1)

11x + 15y + 23 = 0 ....(i)
7x - 2y - 20 = 0  ,.....(ii)
-> 2y = 7x - 20
y = 7x/2 - 10        put value of y in equation (i)
11x + 105x/2 -150 + 23 = 0
127x/2 - 127 = 0  -> x = 2  put value of x in equation (ii)
14 - 2y - 20 = 0
2y = 20-14   -> y=-3

Posted by

Ravindra Pindel

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