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I need help on this question please

I need help on this question please-example-1
User Flurdy
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1 Answer

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(x - y) / 9 = m...multiply both sides by 9
x - y = 9m....subtract x from both sides
-y = 9m - x ...multiply both sides by -1 to make y positive
y = -9m + x....or y = x - 9m
User Rohit Soni
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