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( 4x + 7y = 39 )
Answer:
x = −7 / 4y + 39 / 4
y = −4 / 7x + 39 /7
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( 6x - 7y = - 29 )
Answer:
x = 7 / 6y + −29 / 6
y = 6 / 7x + 29 / 7
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