Ответ:
1) x=
2) x= -
3) x=20
Объяснение:
1) -5x-x+5=
2)3-12x+x-4=3
-12x+x-4=0
-11x-4=0
x= -
3)3+5x-12x-20=3-8x
5x-12x-20=-8x
-7x-20=-8x
-7x+8x=20
x=20
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Answers & Comments
Ответ:
1) x=
2) x= -
3) x=20
Объяснение:
1)
-5x-x+5=
2)3
-12x+x-4=3
-12x+x-4=0
-11x-4=0
x= -
3)3
+5x-12x-20=3
-8x
5x-12x-20=-8x
-7x-20=-8x
-7x+8x=20
x=20