Question

Apresente uma solução para a equação 9x-5x=21

Answer 1

$\Large\mathsf\displaystyle{}9x - 5x = 21 \\\Large\mathsf\displaystyle{}4x = 21 \\\\ \Large\mathsf\displaystyle{}x = \dfrac{21}{4}$

Solução:

$\Large\displaystyle\text{ \begin{gathered} \underline{\boxed{\boldsymbol{ x = 5,25 }}}\end{gathered} }$

$\displaystyle\text{ \begin{gathered} \underline{\boxed{\boldsymbol{{ \red{Bons}} \blue{\:Estudos}}}}\end{gathered} }$

Answer 2

9x-5x=21

4x = 21

x = 21 ÷ 4

x = 5,25