Answer:
[tex]1 + 1 = 2 \\ 2 + 2 = 4 \\ 3 + 3 = 6 \\ 4 + 4 = 8 \\ 5 + 5 = 10 \\ 6 + 6 = 12[/tex]
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you've been just plus them
easy
#CarryOnLearning