Solve two-step equations and justify each inverse operation.
Solve a two-step context equation
Problem
\(\text{Three}~\text{movie}~\text{tickets}\) plus a \(\$4\) service fee cost \(\$25\). Write and solve a two-step equation for the cost per ticket.
Big Picture
What this problem is really about
Separate the total into three equal ticket costs and one fixed service fee. Model the repeated ticket amount with multiplication and add the fee only once. To find one ticket's cost, first remove the fee from the total, then divide the remaining ticket subtotal equally among three tickets.
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