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OpenStudy (anonymous):
(2x-2)+(7x+21)
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OpenStudy (jlastino):
Combine similar terms (sorry T_T)
OpenStudy (anonymous):
remove the brackets so it will be 2x-2+7x+21 and then combine similar terms
OpenStudy (anonymous):
u got it ?
OpenStudy (anonymous):
2x-2+7x+21=9x+19
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