There are 12 x 5/6 = <<12*5/6=10>>10 girls who are reading.

So, 12 - 10 = <<12-10=2>>2 girls are not reading.

There are 10 x 4/5 = <<10*4/5=8>>8 boys who are reading.

So, 10 - 8 = <<10-8=2>>2 boys are not reading.

Thus, there are a total of 2 girls + 2 boys = <<2+2=4>>4 students who are not reading.

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A class composed of 12 girls and 10 boys was sent to the library for their reading class. Their teacher found out that only 5/6 of the girls and 4/5 of the boys are reading. How many students are not reading?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4
A class composed of 12 girls and 10 boys was sent to the library for their reading class. Their teacher found out that only 5/6 of the girls and 4/5 of the boys are reading. How many students are not reading?
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