Jackson used 20 x 1/4 = <<20*1/4=5>>5 kilograms of meat to make meatballs.

He had 20 - 5 = <<20-5=15>>15 kilograms of meat left.

So 15 - 3 = <<15-3=12>>12 kilograms of meat are left.

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Jackson had 20 kilograms of meat. He used 1/4 of the meat to make meatballs and used 3 kilograms of meat to make spring rolls. How many kilograms of meat are left?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
12
Jackson had 20 kilograms of meat. He used 1/4 of the meat to make meatballs and used 3 kilograms of meat to make spring rolls. How many kilograms of meat are left?
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