Question

by what number should (-5)-1 be multiplied so that the product is (8)-1

Answer 1

5×x=-8
x= -8/5

so the number is -8/5

Answer 2

-5-1=-6 and 8-1=7
let the no. be x than acc. to the que.
-6x=7
x=-7/6
therefore the no. must be -7/6