Multiplique Cruzado:
[tex] \large \sf \dfrac{5}{10} = \dfrac{2}{x} = \boxed{ \large \sf \dfrac{5 \cdot \: x}{ 10\cdot 2}} \\ \\ \\ \boxed{ \boxed{ \red{\large \sf5x = 20}}}[/tex]
[tex]\boxed{\begin{array}{lr} \\ \large \sf \: 5x = 20 \\ \\\large \sf \: x = \dfrac{20}{5} \\ \\ \boxed{ \red{ \large \sf \:x = 4}} \\ \: \end{array}}[/tex]
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↔️ Resposta:
- [tex] \boxed{\large \sf x = 4 } [/tex]
