Exodus 26:12

10 Make fifty loops along the edge of the end curtain in the first set, and fifty loops along the edge of the corresponding curtain in the second set.

11 Make fifty bronze clasps and put them through the loops to join the tent together as a unit.

As for the overlap that remains of the tent curtains, the half curtain that is left over shall hang down over the back of the tabernacle.

13 And the tent curtains will be a cubit longer on either side, and the excess will hang over the sides of the tabernacle to cover it.

14 Also make a covering for the tent out of ram skins dyed red, and over that a covering of fine leather.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
As for the overlap that remains of the tent curtains, the half curtain that is left over shall hang down over the back of the tabernacle.
KJV
And the remnant that remaineth of the curtains of the tent, the half curtain that remaineth, shall hang over the backside of the tabernacle.
WEB
The overhanging part that remains of the curtains of the tent—the half curtain that remains—shall hang over the back of the tabernacle.
ASV
And the overhanging part that remaineth of the curtains of the tent, the half curtain that remaineth, shall hang over the back of the tabernacle.
DARBY
And that which remaineth hanging over of the curtains of the tent, the half curtain that remaineth, shall hang over the rear of the tabernacle.
BLB
And the excess that remains in the curtains of the tent, the half curtain that remains shall hang over the back of the tabernacle.
ÅB
Men det overskytende av dekketeppene - det halve teppe som er tilovers - skal henge ned på baksiden av tabernaklet.
OTB
Den ekstra lengden av teltteppene, den halve teppet som blir til overs, skal henge over baksiden av tabernaklet.
B1930
Men det overskytende av dekketeppene - det halve teppe som er tilovers - skal henge ned på baksiden av tabernaklet.

Study notes (Tyndale)

Original text and word study