H
hieulala


cứu tớ cái.
[tex]\frac{x+97}{125}[/tex] + [tex]\frac{x-63}{35}[/tex] = [tex]\frac{x-7}{21}[/tex] + [tex]\frac{x-77}{49}[/tex]
[tex]\frac{x+97}{125}[/tex] + [tex]\frac{x-63}{35}[/tex] = [tex]\frac{x-7}{21}[/tex] + [tex]\frac{x-77}{49}[/tex]
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