3x - 117 = 30
7x-4y=
9x = 5y =
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Answer:
3x - 117 = 30
=> 3x = 30 + 117
=> 3x = 347
=> x = 347/3
.•. x = 347/3
7x - 4y = ( 7x-4y )
9x = 5y
=> x/y = 9/5
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