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03-01-2017
Mathematics

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-r + 6 +8r -14
Simplify the expressions by combining like terms?

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03-01-2017

-r + 6 + 8r - 14

Add up all the 'r's: -r + 8r = 7r

Add up all of the
just-plain-numbers: + 6 - 14 = - 8

The whole messy complicated expression is the same as 7r - 8 .

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