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Mathematics 20 Online
OpenStudy (anonymous):

simplify x + y + z - 3x - 4y -2z

jimthompson5910 (jim_thompson5910):

x + y + z - 3x - 4y -2z (x-3x) + (y-4y) + (z-2z) -2x - 3y - z So x + y + z - 3x - 4y -2z completely simplifies to -2x - 3y - z

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