10y+1/6-2y-1/3=1-2y+1/4

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• 3分之2y-1 -6分之10y+1=4分之2y+1 -1
• 10y+1/6-2y-1/3=1-2y+1/4
• 1-(x-1)/3=(x+3)/2 （2y+1）/4-1=y-（10y+1）/12 3x+（x+1）/2=3-（2x-1）/3
• (2y-1)/3-(10y+1)/6=(2y+1),5x/12=(2x-1)/4-1 1/3[3y-(10-7y)/2]-1/2[2y-(2y+2)/3]=y/2-1
• (2y-1)/3-(10y+1)/6=(2y+1),5x/12=(2x-1)/4-1 1/3[3y-(10-7y)/2]-1/2[2y-(2y+2)/3]=y/2-1
• 3分之2y-1 -6分之10y+1=4分之2y+1 -1
• 2y+1/4+10y+1/6=1-1-2y/3
• 顺便帮忙证明下：设X和Y是相互独立的随机变量,且X~π(λ1),π(λ2),证明Z=X+Y~