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cl a 5 ?
[15•(10x-11)-120]•10-25=125

Răspuns :

Marilenasurubaru
[15•(10x-11)-120]•10=125+25
[150x-165-120]•10=150
[150x-285]=150:10
150x-285=15
150x=285+15
150x=300
X=300:150
X=2

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