How do you combine #(3-r) + (4+5r) + (2r-1)#?

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Answer 1 · 2015-04-28T20:11:28

The answer is #6r+6#.

#(3-r)+(4+5r)+(2r-1)#

Do what's in each set of parentheses first.

#3-r+4+5r+2r-1# =

Combine like terms and add or subtract from left to right.

#-r+5r+2r+3+4-1# =

#6r+6#