The addition of the opposite, to both sides of the equation. keep it equal
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There is not Substitution Property of Congruence. There is, however, one for Equality, called the Substitution Property of Equality.
Will you show an example problem? 5+2=8-1
A # that is + and is= ex 5=5
Isolate the variable. Get it by itself. 9+11x=89+x 9+11x-1x=89+x-1x Subtraction property of equality 9+10x=89 9+10x-9=89-9 subtraction property of equality 10x=80 x=8 division property of equality.
Ab = 25 CD