How do you find the sum of #(c-4)+(3c+9)#?

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Answer 1 · 2016-12-01T14:00:41

#4c + 5#

Step 1) Remove the parenthesis:

#c - 4 + 3c + 9#

Step 2) Rearrange to combine like terms:

#c + 3c - 4 + 9#

Step 3) Add like terms:

#(1c + 3c) + (-4 + 9)#

#(1 + 3)c + 5#

#4c + 5#