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There are 28 light bulbs. 16 of the light bulbs are lit. We can make the fraction 16/28 to show what part of the light bulbs are lit.


16/28 can be put into lowest terms.

The G.C.F. of 16 and 28 is 4.

16 divided by 4 = 4
28 divided by 4 = 7

So, 16/28 = 4/7.




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