Question

47 lbs = ______________ kgs (give answer in decimal form)

Answer 1

1 pound is equal to about 0.45 kilograms.  47 lbs would be about 21.31 kilograms.

Answer 2

"lbs" (pounds) is a measure of force, whereas "kgs" (kilograms) is
a measure of mass.  Being different units with different physical
dimensions, they can never be 'equal'.

-- 47 lbs is the weight of 64.9 kgs of mass on Mars.
-- 47 lbs is the weight of 128.8 kgs of mass on the Moon.
-- 47 lbs is the weight of 21.3 kgs of mass on Earth.
.
.
etc.