Question

СРОЧНО ДАЮ 50 БАЛОВ

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Answer 1

2x-4/2-x=0

2x-4=0

2x=4

x=2

x/x-3=2/5

x=0,4x-1,2

0,6x=-1,2

x=-2

2x/x²-1==x/x+1±x/x-1

x=0