SOLUTION: please help it says factor by grouping 3x + 3y + ax + ay

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Question 262780: please help
it says factor by grouping
3x + 3y + ax + ay
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
Here is the original problem:
3x+%2B+3y+%2B+ax+%2B+ay
step 1 - put (_) around the first and second pair of terms to get
%283x%2B3y%29+%2B+%28ax%2Bay%29
step 2 - find the GCF of both sets of (_) and we get
3%28x%2By%29+%2B+a%28x%2By%29
step 3 - find the GCF of the entire expression as
%283%2Ba%29%28x%2By%29