Question

@AnswerMyQuestions @iGreen
FIND THE SUM OR DIFFRENCE
15/16-7/13
A.13/32
B.23/32
C.3/4

Answer 1

What's the least common denominator between 16 and 13?

Answer 2

3

Answer 3

The least common denominator can't be smaller than the two numbers.

Answer 4

Well the least common multiple here will be, \(15 \times 13 = 208\).

So we change the fractions into denominators of \(208\):

\(\dfrac{195}{208} - \dfrac{105}{208}\)

\(\dfrac{195-105}{208}\)

Can you subtract 195 - 105?

Answer 5

90

Answer 6

Hmm. I think there's something wrong with your question.

Answer 7

YES THE FRACTION 7/13 IS SPOSE TO BE 7/32

Answer 8

Um..oh..

Answer 9

So the lcd is actually 32.

Answer 10

OKA SORRY ABOUT THAT

Answer 11

We change 15/16 to a denominator of 32.

\(\dfrac{15}{16} \rightarrow \dfrac{15 \times 2}{16 \times 2} \rightarrow \dfrac{30}{32}\)

\(\dfrac{30}{32} - \dfrac{7}{32} \rightarrow \dfrac{30-7}{32}\)

Can you subtract 30 - 7?

Answer 12

23

Answer 13

Yep, so what's our answer going to be?

Answer 14

B