Ответ:
a). =6x+3y-8y+4x= 10x-5y= 10*0,2-5-2/5= 2-2=0
в). =8a-b-3a+7b=5a+6b=5*(-0,4)+6*1/3=-2+2=0
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Ответ:
a). =6x+3y-8y+4x= 10x-5y= 10*0,2-5-2/5= 2-2=0
в). =8a-b-3a+7b=5a+6b=5*(-0,4)+6*1/3=-2+2=0