计算:1.2^2+(4-7)/3/2+(-1)^20072.6x-(2x-y)-[2y+(x-3y)].每题都要清楚过程!

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计算:1.2^2+(4-7)/3/2+(-1)^20072.6x-(2x-y)-[2y+(x-3y)].每题都要清楚过程!
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计算:1.2^2+(4-7)/3/2+(-1)^20072.6x-(2x-y)-[2y+(x-3y)].每题都要清楚过程!
计算:1.2^2+(4-7)/3/2+(-1)^2007
2.6x-(2x-y)-[2y+(x-3y)].每题都要清楚过程!

计算:1.2^2+(4-7)/3/2+(-1)^20072.6x-(2x-y)-[2y+(x-3y)].每题都要清楚过程!
1.4+3/(3/2)+(-1)=4+2-1=5
2.6x-2x+y-2y-x+3y=3x+2y

  1. =4+(-3)/3/2-1

    =4-1/2-1

    =5/2

  2. =6x-2x+y-2y-x+3y

    =3x+2y