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in addition property of equality, why add the opposite sign of constant number on both sides instead of the constant's side?​

Sagot :

Answer:

because There is some way of dealing with variables on both sides called "transferring the terms", used most widely in China. ... The term actually goes to the other side of equation because on the original side the two terms cancel out or multiply to 1. So it's the same thing.

The addition property of equality tells us that adding the same number to each side of an equation gives us an equivalent equation. ifa−b=c,thena−b+b=c+b,ora=c+b. The same goes with the subtraction property of equality.