去括号,并合并同类项 3x+1-2(4-x)

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去括号,并合并同类项 3x+1-2(4-x)
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去括号,并合并同类项 3x+1-2(4-x)
去括号,并合并同类项 3x+1-2(4-x)

去括号,并合并同类项 3x+1-2(4-x)
3x+1-2(4-x)
=3x+1-8+2x
=5x-7

5x-7

3x+1-2(4-x)
=3x+1-8+2x
=5x-7

3x+1-2(4-x)=3x+1-8+2x=5x-7

5x-7

3x+1-2(4-x)
=3x+1-8+2x
=5x-7

3x+1-2(4-x)
=3x+1-8+2x
=5x-7

=3x+1-8+2x
=5x-7

3x+1-8+2x
5x-7