Question 1101898
Joe started with M amount of money.


{{{M-M/2-10}}}, he still had after the restaurant.


{{{(M-M/2-10)-(1/2)(M-M/2-10)-10-10=0}}}--------Solve for M, the amount he started with.

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{{{M-M/2-(1/2)(M-M/2-10)=30}}}

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{{{highlight(M=100)}}}