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I NEED THIS FAST PLEASE HELP WILL GIVE BRANILIOSST

I NEED THIS FAST PLEASE HELP WILL GIVE BRANILIOSST-example-1

1 Answer

7 votes

a true for all

3x=x+8

-8=x-3x

-8=-2x

4=x

b true for some (eg. -1=x, 1=x)

5x= x+x+x+x+x

5x=5x

0=5x-5x

0=0

c true for none

2(x+5)=2x+5

2x+10=2x+5

10-5= 2x-2x

5=0

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