Sam ordered 2 tacos and 3 enchiladas for lunch at the restaurant. His bill came to $7.80. If enchiladas were $2 each, what is the cost of each taco?

2x + 3*2 = 7.80

To find the cost of each taco, we can set up an equation using the given information. Let's denote the cost of each taco as "x".

We know that Sam ordered 2 tacos, so the total cost of the tacos is 2x.

We also know that Sam ordered 3 enchiladas at $2 each, so the total cost of the enchiladas is 3 * 2 = $6.

Since the total bill came to $7.80, we can set up the equation:

2x + 6 = 7.80

Now, we can solve for "x" by subtracting 6 from both sides of the equation:

2x = 7.80 - 6

2x = 1.80

Finally, we divide both sides of the equation by 2 to solve for "x":

x = 1.80 / 2

x = 0.90

Therefore, the cost of each taco is $0.90.