Will you show an example problem? 5+2=8-1
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The addition of the opposite, to both sides of the equation. keep it equal
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
No you can not use subtraction or division in the associative property.
yes it does work for subtraction