Brittany needs a total of 12 3|4 yards of yarn for an art project. she needs 1 3/8 yards of blue yarn and 5 1/2 yards of green yarn. the rest of the yarn she needs is red how much red yarn does brittany need

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b