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OpenStudy (anonymous):
Simplify the following expression. 2x − 2y − 5z + 2x + 2y + 3z A. 4x − 4y − 2z B. 4x − 4y − 8z C. 4x − 4y + 8z D. 4x − 2z
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OpenStudy (eamier):
just count x term with x, y term with y and z with z
OpenStudy (eamier):
the fastest way to detect answer is by simplify y. 2y-2y=0. so there should be no y term in answer
OpenStudy (anonymous):
thanks!
OpenStudy (eamier):
its D right
OpenStudy (anonymous):
yes
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