clebby3056
23.06.2019 •
Mathematics
Use substitution to solvey=2x+1 y=x-5
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Ответ:
-x -x
X+1 = -5
-1 -1
X = -6
2(-6) +1= y
-12+1= y
-11 = y
-11 = -12+1
-11 = -6-5
Ответ:
C. m4 = 180° - m3