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Olivabelisa
@Olivabelisa
December 2019
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Sabendo que 2(1-0,4 X)+ X =4 (0,1X-0,4
O valor é igual a:
A) 18
B)-18
C) 1,8
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3478elc
2(1-0,4 X)+ X =4 (0,1X-0,4)
2 - 0,8x + x = 0,4x - 1,6
- 0,8x + x - 0,4x = - 1,6 - 2
- 0,2x = - 3,6(-1)
0,2x = 3,6 ==> x = 3,6 ==>x = 18
0,2
letra A
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Lista de comentários
2(1-0,4 X)+ X =4 (0,1X-0,4)
2 - 0,8x + x = 0,4x - 1,6
- 0,8x + x - 0,4x = - 1,6 - 2
- 0,2x = - 3,6(-1)
0,2x = 3,6 ==> x = 3,6 ==>x = 18
0,2
letra A