x-[tex]\frac{39}{100}[/tex]=35
[tex]\frac{100x-39}{100}[/tex]=35
100x-39=100·35
100x-39=3500
100x=3500+39
100x=3539=>x= [tex]\frac{3539}{100}[/tex]=35,39
Sau
[tex]\frac{70}{100}[/tex]·x=35
[tex]\frac{7}{10}[/tex]·x=35
x=35: [tex]\frac{7}{10}[/tex]
x= [tex]\frac{35}{1}[/tex]· [tex]\frac{10}{7}[/tex]
x=5·10=50
Sper să te ajute! ^_^
