Becca had 13/15 of a yard of ribbon to use for her crafts projects. She used 3/7 of a yard to make a bow. How much ribbon, r, does Becca have left?
set up an equation to solve
?=13/15
r=?
13/15 - 3/7 = r
Becca had of a yard of ribbon to use for her crafts projects. She used of a yard to make a bow. How much ribbon, r, does Becca have left?
Becca had 13/15 of a yard of ribbon to use for her crafts projects. She used 3/7 of a yard to make a bow. How much ribbon, r, does Becca have left?
To solve this problem, we need to subtract the amount of ribbon Becca used from the total amount she had.
Let's set up the equation:
r = 13/15 - 3/7
To subtract fractions, we need a common denominator. The least common denominator (LCD) for 15 and 7 is 105.
Now, we can rewrite the equation with a common denominator:
r = (13/15) * (7/7) - (3/7) * (15/15)
Simplifying the equation:
r = 91/105 - 45/105
Next, subtract the numerators:
r = (91 - 45)/105
Combine like terms:
r = 46/105
Therefore, Becca has 46/105 of a yard of ribbon left.