Thomas has 25 drawings to display. 14 of the drawings were made using colored pencils. 7 of the drawings were made using blending markers. The rest of the drawings were made with charcoal. How many are charcoal drawings?
Thomas made 14 + 7 = <<14+7=21>>21 colored pencil and blending marker drawings.
Thomas made 25 total drawings – 21 colored pencil and blending marker drawings = <<25-21=4>>4 charcoal drawings.
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