Where does “línuleg jafna” come from?

línuleg jafna (Icelandic) comes from Icelandic línuleg, from Icelandic jafna, from Old Norse jafna, from Old Norse jafn, from Proto-Germanic ebnaz, from Proto-Indo-European h₁émnos — equal, straight; flat, level, even.

línuleg jafna (Icelandic): linear equation

Definitions

linear equation

Ancestry of “línuleg jafna”, step by step

Step	Language	Word	Meaning
1	Icelandic	línuleg	—
2	Icelandic	jafna	an equation; to equalise, level, even up, even...
3	Old Norse	jafna	to even; level ground; inflection of jafn: ##...
4	Old Norse	jafn	even; equal, the same
5	Proto-Germanic	ebnaz	even, level
6	Proto-Indo-European	h₁émnos	equal, straight; flat, level, even

Every word from Proto-Indo-European h₁émnos →Every word from Proto-Germanic ebnaz →Every word from Old Norse jafn →