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Ethan bought a bag of marbles. After giving 1/5 of his marbles to Jacob and 105 marbles to Adam, he had 1/3 of the marbles left. How many marbles did Ethan buy?

 Sep 9, 2021
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Ethans marbles

; x-1/5x-105=1/3x

:x-3/15x-105=5/15x

:12/15x-105=5/15x

:7/15x=105

:1/15x=15

:x = 225

 Sep 15, 2021

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