A table top would be a good representation of a plain because it is a flat surface, and isn't a 3D object, if that makes sense. A box wouldn't be a plane because it has 6 different sides but a table only has one side and one plane. hope this helps :)
<span>1/6+1/6+1/6+1/6=4/6, and as a number line it looks like 1/6 + 1/6 + 1/6 + 1/6
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1/6 2/6 3/6 4/6</span>
This is pretty simple-ish, if you think about it. All we're doing is working backwards.
237,286 + 476 = 237,762
237,762/629 = 378.
We could even check it again, if you want.
378*629 = 237,762
237,762 - 476 = 237, 286.
Therefore, x = 378.
