Solve the following systems of equations:3x - 7y + 10 = 0y - 2x - 3 = – InterviewSolution

1.

Solve the following systems of equations:3x - 7y + 10 = 0y - 2x - 3 = 0

Answer»

3x - 7y + 10 = 0

y - 2x - 3 = 0

Multiplying eq 1 by 2 and eq 2 by 3 and adding.

⇒ 6x – 14y + 20 + 3y – 6x – 9 = 0

⇒ - 11y = - 11

⇒ y = 1

Substituting value of y in eq 1, we get

x = - 1

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