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7.(2x-50)-4x=10 .(51,9-0,1x)​

72x504x10 51901x class=

Resposta :

Vamos là.

7*(2x - 50) - 4x = 10*(51,9 - 0,1x)

14x - 350 - 4x = 519 - x

14x - 4x + x = 519 + 350

11x = 869

x = 869/11 = 79