Alicia had 76 pencils at the end, gave 18 pencils, and received a total of 33 pencils. 33-18 = 15. Alicia gains 15 pencils. To figure out how many she already had we subtract 76 to 15. 76-15 = 61. To check this we can make an equation. 61-18+10+23 = 76. 76 = 76 so Alicia had 61 pencils in the begginning.
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