TOPIC:Solving a word problem with two unknowns using a linear equation.

A local hamburger shop sold a combined total of 396 hamburgers and cheeseburgers on Thursday. There were 54 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Thursday?

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Below is the solution:

x the number of hamburgers referred to
cheeseburgers + hamburgers = 396
2x + x = 396
3x = 
396
x = 132, the number of hamburgers
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