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Answered by
1
6x-6y+3+3z+4-x
=
4x-6y+3z+7
=
4x-6y+3z+7
Answered by
1
6x-(6x-3+x)+3z+4-x
=>6x-6y+3-x+3z+4-x
=>6x-2x-6y+3z+7
=>4x-6y+3z+7
=>6x-6y+3-x+3z+4-x
=>6x-2x-6y+3z+7
=>4x-6y+3z+7
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