Question

determine a raiz ou solução de cada uma das seguintes equações
× - 10/9 + ×/9 = 10


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Answer 1

$\LARGE\tt{}x - \dfrac{10}{9} + \dfrac{x}{9} = 10 \\ \\ \LARGE\tt{}9(x - \dfrac{10}{9} + \dfrac{x}{9} ) = 10 \\ \\ \LARGE\tt{} 9x - 9 \times \dfrac{10}{9} + 9 \times \dfrac{x}{9} = 9 \times 10 \\ \\ \LARGE\tt{}9x - 9 \times \dfrac{10}{9} + 9 \times \dfrac{x}{9} = 90 \\ \\ \LARGE\tt{}9x - \cancel{9} \times \dfrac{10}{\cancel{9}} + 9 \times \dfrac{x}{9} = 90 \\ \\\LARGE\tt{} 9x - 10 + 9 \times \dfrac{x}{9} = 90 \\ \\ \LARGE\tt{}9x - 9 \times 10 + \cancel{9} + \dfrac{x}{\cancel{9}} = 90 \\ \\ \LARGE\tt{}9x - 10 + x = 90 \\ \\ \LARGE\tt{}10x - 10 = 90 \\ \\ \LARGE\tt{}10x = 90 + 10 \\ \\ \LARGE\tt{}10x = 100 \\ \\ \LARGE\tt{}x = \dfrac{100}{10} \\ \\ {\large\boxed{\boxed{  { \LARGE \tt x = 10}}}}$

${\large\boxed{\boxed{  { \large \tt Bons~Estudos~! }}}}$

Answer 2

Resposta:

Explicação passo a passo:

× - 10/9 + ×/9 = 10

x+x/9=10+10/9

(9x+x)/9= (90+10)/9

10x= 100

"x=10"