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Respondido

5×+4=2×+10=

10×-20=10

Resposta :

Makaveli1996go

(I)

5x + 4 = 2x + 10

5x - 2x = 10 - 4

3x = 6

x = 6/3

x = 2

(II)

10x - 20 = 10

10x = 10 + 20

10x = 30

x = 30/10

x = 3

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