Lynne took a taxicab from her office to the airport. She had to pay a flat fee of $2.05 plus $0.90 per mile. The total cost was $5.65. How many miles was the taxi trip?

The equation will be 2.05+.90x=5.65

X equals each mile so we need to get x alone to find how many miles the trips was.

First subtract 2.05 from both sides of the equation.

0.90x=3.60

Then divide both sides by 0.90

x=4

The trip was four miles.

So you do,

5.65-2.05 which is 3.6

Then 3.6/.90 which is 4 miles/.