[2*(x+2)*5+3*(x+2)]*7=273

Dau coroniț@

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Grade: Education Subject: matematica
[2*(x+2)*5+3*(x+2)]*7=273

Dau coroniț@
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(122)
vine 
(10(x+2)+3x+6)*7=273
(10x+20+3x+6)*7+273
(13x+26)*7=273
91x+182=273
91x=273-182=91
x=1
(487)
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