Question

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

Answer 1

Explanation:

Set it up like an equation first:

`((-7)/(25) )/(x)=-(1)/(15)` and then bring up the lower fraction, flip it, and multiply:

`-(7)/(25)*(1)/(x)=-(1)/(15)`

Simplify to

`-(7)/(25x)=-(1)/(15)` and cross multiply to get

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

`x=(105)/(25)=(21)/(5)`