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Mathematics
Cole
20 July, 14:09
X - (4x-7) = 5x - (x+21)
This is for my math class on homework
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Lena Campos
20 July, 14:50
0
X - (4x-7) = 5x - (x+21)
x-4x+7=5x-x-21
-3x+7=4x-21
-7 - 7
-3x=4x-28
-4x - 4x
-7x=-28
/-7 / - 7
x=4
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