Question

Aflati - l pe "X" din operatia:

$19 \div x + x - x \div x = 19$
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Answer 1

Răspuns:

19:x+x-x:x=19

19:x+x-1=19

x+x-1=19:19

2x=1+1

2x=2=>x=2:2=>x=1