Question

determine o valor de x

Answer 1

utilizando potência de ponto

a- 5x-7=2x+20

3x=27

[x=9]

$\boxed{ \boxed{ \boxed{ \mathsf{x = 9}}}}$

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b- 4x-4=12

4x=16

[x=4]

$\boxed{ \boxed{ \boxed{ \mathsf{x = 4}}}}$

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