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- 4x +5-12-7x+4+2xI need help
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- 4x +5-12-7x+4+2xI need help

User Grzegorz Krukowski
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\begin{gathered} -4x+5-12-7x+4+2x \\ collect\text{ like terms} \\ -4x-7x+2x+5-12+4 \\ -11x+2x-7+4 \\ -9x-3 \end{gathered}

User Zswqa
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