Question

The product of two rationalnumber is (-20/40 ).If one ofthe number is (4/5), then the other number is _______

Answer 1

The product of two rationalnumber is (-20/40 ).If one ofthe number is (4/5), then the other number is -5/8

4/5*-5/8 = -20/40

x= the number

4*x/5 =-20/40

4x*40 = -20*5

160x=-100

x=-100/160 = -5/8