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5x + 7 - 2(-8x -1) = 7(x - 1)
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5x + 7 - 2(-8x -1) = 7(x - 1)

User Janely
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Explanation:


5x + 7 - 2( - 8x - 1) = 7(x - 1) \\ 5x + 7 + 16x + 2 = 7x - 7 \\ collecting \: like \: \: terms \: \\ 5x + 16x - 7x = - 7 - 2 - 7 \\ 14x = - 16 \\ divide \: both \: side \: by \: 14 \\ (14x)/(14) = ( - 16)/(14) \\ x = - ( 8)/(7)

User Mudit Gulgulia
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