Respuesta :

Answer:

1.) subtract = 1 1/3 - 3 1/2 = answer

2.) subtract = 6 3/4 - 1 1/2 = answer

3.) add = 3 1/4 + 2 1/8= answer

4.) subtract = 4 3/4 - 2 1/6 = answer

Step-by-step explanation:

5.) 3 lawns = 6 3/4 hrs

1st lawn 2 1/2 hrs

2nd lawn 1 3/4 hrs

add 2 1/2  + 1 3/4 = total

then 6 3/4 hrs - total = the amount it takes to mow the 3rd lawn

im sure u know how to add and subtract fractions is u r in middle school :)