Question

divide
2/5 / -3/10

A.http://static.k12.com/bank_packages/files/media/mathml_221b4a1c0e2637a4d179aec080db6ff3f8cab8fc_1.gif

B.http://static.k12.com/bank_packages/files/media/mathml_a2543b3347056437e37b0e86a8b349c2fd5cb372_1.gif

C.http://static.k12.com/bank_packages/files/media/mathml_3e5f9ad33dad60506d79b4c0d95d6f4efc9308c8_1.gif

D.http://static.k12.com/bank_packages/files/media/mathml_98514a849d2c9628b4ab0c5009c94bbea25e03a1_1.gif

Answer 1

Do you know it?

Answer 2

\[\frac{2}{5}\div \frac{-3}{10}~~\Longrightarrow~~\frac{2}{5}\times \frac{10}{-3}\]

Answer 3

you flip the fraction by which you divided, and instead of dividing by it, you multiply by it

Answer 4

that works in any case,

\[\frac{A}{B}\div \frac{C}{D}~~=~~\frac{A}{B}\times\frac{D}{C}\]

Answer 5

can you proceed ?

Answer 6

2/5/-3/10 = -1/75

Answer 7

There is no implied grouping in this problem.
The divisions are calculated from left to right.