3x - 5y- 4 = 0 and 9x = 2y + 7
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3x - 5y - 4 = 0
⇒ -2x - 4 = 0
⇒ -2x = 4
⇒ -2x/-2 = 4/-2 (Dividing both sides with -2)
⇒ x = -2
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