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Amir Lowe
Mathematics
17 August, 00:22
GH=7y+3, HI=3y-5, GI=9y+7. What is the value of Y
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Alyvia
17 August, 00:28
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GH = 7y + 3, HI = 3y - 5, GI = 9y + 7
7y + 3 + 3y - 5 = 9y + 7
10y - 2 = 9y + 7
10y - 9y = 7 + 2
y = 9 <===
lets check that ...
7 (9) + 3 + 3 (9) - 5 = 9 (9) + 7
63 + 3 + 27 - 5 = 81 + 7
93 - 5 = 81 + 7
88 = 88 (correct)
so yes, y = 9
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