Question

What should be subtracted from the additive inverse of -2by5 to get the multiplicative inverse of -4by5

Answer 1

additive inverse of -2/5=2/5

multiplicative inverse of -4/5 is -5/4

given

2/5-x=-5/4

x=5/4+2/5 (L.C.M=20)

x=25+8/20

x=33/20