¾+¼-¹¹/¹³

To solve the expression ¾ + ¼ - ¹¹/¹³, we need to simplify each term one by one and then perform the operations in the correct order (following the order of operations, which is parentheses, exponents, multiplication/division, and addition/subtraction).

1. Simplify the fraction ¾:

Since ¾ is already in simplest form, there is nothing more to do with this term.

2. Simplify the fraction ¼:

Again, ¼ is already in simplest form.

3. Simplify the fraction ¹¹/¹³:

Since ¹³ is divisible by ¹¹, we can simplify this fraction by dividing both the numerator and denominator by ¹¹:

¹¹/¹³ = 1/¹

Therefore, the expression becomes:

¾ + ¼ - 1/¹

4. Substitute 1/¹ with 1:

¾ + ¼ - 1

Now, we can add and subtract:

3/4 + 1/4 - 1 = (3 + 1 - 1) / 4 = 3/4

So, the final answer is 3/4.