if 3x + 4y = 16 and xy = 4 find 9x and 4x
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9x=27 and 4x=12......answer
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by substitution method v get Y =3
X=4/3
9x=9*4/3
9x=12
4x=4*4/3
4x=16/3
X=4/3
9x=9*4/3
9x=12
4x=4*4/3
4x=16/3
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