exam Maths Puzzle Numerical Ability

according to the additoin property of equations, each side of an equation may have__________________.

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exam Other Question

Tickets for a play at the community theater cost $16 for an adult and $2 for a child. If 210 tickets were sold and the total receipts were $2380, how many of each type of ticket were sold? the crowd that heard the President speak was estimated to be 10000 people.The actual crowd could be 750 people more or less than this. what are the possible values for the actual crowd size?