Răspuns :
Salutare !
[tex]\frac{45}{100} X x = 63 \\\\\frac{45x}{100} = 63 \\\\45x = 100 X 63 \\x = 6300 : 45 \\\\x = \frac{6300}{45} = 140 \\\\x = 140 \\\\Succes !\\#Albert1001[/tex]
Salutare !
[tex]\frac{45}{100} X x = 63 \\\\\frac{45x}{100} = 63 \\\\45x = 100 X 63 \\x = 6300 : 45 \\\\x = \frac{6300}{45} = 140 \\\\x = 140 \\\\Succes !\\#Albert1001[/tex]