Найдите значение выражения (x+y)+x,если:
а)x=77; y= -89;
б)x=-100; y= -673
в)x= -9,09; y=20,1.
а)x=77; y= -89;
б)x=-100; y= -673
в)x= -9,09; y=20,1.
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(х+у)+х=2х+уа) 2*77+(-89)=154-89=65
б) 2*(-100)+(-673)=-200-673=-873
в) 2*(-9,09)+20,1=-18,18+20,1=1,92