2a+(x+y)-2(a+b)(化简)

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2a+(x+y)-2(a+b)(化简)

2a+(x+y)-2(a+b)
=2a+x+y-(2a+2b)
=2a+x+y-2a-2b
=x+y-2b
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2a+(x+y)-2(a+b)
=2a+x+y-(2a+2b)
=2a+x+y-2a-2b
=x+y-2b

2a+(x+y)-2(a+b)
=2a+x+y-2a-2b
=x+y-2b