Question

x supra 3,5 = 2,4 supra 7. x=?

Answer 1

x/3,5=2,4/7
x*7=3,5*2,4
7x=8,4|:7
x=1,2
Verificare:1,2*7=3,5*2,4
               8,4=8,4

Answer 2

[tex]Formula:\\ daca\ \frac{a}{b}= \frac{c}{d} \ atunci:ad=bc \\ \frac{x}{3,5} = \frac{2,4}{7} \\x*7=3,5*2,4\\7x=8,4\\x=\frac{8,4}{7}\\x=1,2[/tex]