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Whats x-(4x-7)=5x-(x+21)
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Whats x-(4x-7)=5x-(x+21)

User Nani
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x-4x+7=5x-x-21
x-9x+7=-x-21
-8x+7=-x-21
-7x+7=-21
-7x=-28
x=4
User Chelle
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