Question 338023
Briana and her sister Molly both want to buy the same model bicycle.
 Briana needs $73 more before she can afford the bike.
 Molly needs $65 more. 
If they combine their money, they will have just enough to buy one bicycle that they could share.
 What is the cost of the bicycle?
:
Let x = cost of he bike
then
(x - 73) = amt that B has
and
(x - 65) = amt that M has
:
A simple equation
(x-73) + (x-65) = x
2x - 138 = x
2x - x = 138
x = $138 cost of the bike