Ответ:
x= -1 y= -1
Объяснение:
3(x+y)+1=x+4y 3x+3y+1=x+4y 3x-x=4y-3y-1 2x=y-1
7-2(x-y)=x-8y 7-2x+2y=x-8y -2x-x= -8y-2y-7 -3x= -10y-7
-y= -1-2x -y= -1-2×(-1)
-3x=10(-1-2x)-7 y= -1
-3x= -10-20x-7
-3x+20x= -10-7
17x= -17
x= -17÷17
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Verified answer
Ответ:
x= -1 y= -1
Объяснение:
3(x+y)+1=x+4y 3x+3y+1=x+4y 3x-x=4y-3y-1 2x=y-1
7-2(x-y)=x-8y 7-2x+2y=x-8y -2x-x= -8y-2y-7 -3x= -10y-7
-y= -1-2x -y= -1-2×(-1)
-3x=10(-1-2x)-7 y= -1
-3x= -10-20x-7
-3x+20x= -10-7
17x= -17
x= -17÷17