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Mathematics, 24.06.2020 08:01 pcastaneda03

What is the justification for the step taken from line 2 to line 3? 3x+9-7x=x+10+X
-4x+9=2x+10
C
-6x+9=10
-6x=1
x==
6
1

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What is the justification for the step taken from line 2 to line 3? 3x+9-7x=x+10+X
-4x+9=2x+1...

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