Question

@iGreen i will give u a meadel help!!!! rebeca had 9/10 of yard ribbon. then she gave 7/20 to her freind. how much dose she hace left. give me an explination and explain....

Answer 1

9/10-7/20=
Multiply the numerator and denominator by 2 of 9/10 to get to the denominator to 20
18/20-7/20=

Answer 2

Subtract them..first convert them into denominators of 7/20.

\(\dfrac{9}{10} \rightarrow \dfrac{9 \times 2}{10 \times 2} \rightarrow \dfrac{18}{20}\)

Okay, now we can subtract:

\(\dfrac{18}{20} - \dfrac{7}{20}\)

\(\dfrac{18-7}{20}\)

Can you subtract that? @oregon8

Answer 3

9

Answer 4

No, check again.

Answer 5

What's 18 - 7?

Answer 6

11

Answer 7

Yep, that gives us \(\dfrac{11}{20}\).

So Rebecca has \(\dfrac{11}{20}\) yard of ribbon left.

Answer 8

thanks