Question

By which number -7÷25 should be divided to get -1÷15

Answer 1

Answer:

Step-by-step explanation:

Set it up like an equation first:

$\frac{\frac{-7}{25} }{x}=-\frac{1}{15}$ and then bring up the lower fraction, flip it, and multiply:

$-\frac{7}{25}*\frac{1}{x}=-\frac{1}{15}$

Simplify to

$-\frac{7}{25x}=-\frac{1}{15}$ and cross multiply to get

-25x = -105 and divide both sides by -25 to get that

$x=\frac{105}{25}=\frac{21}{5}$