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1. 5x - 0.7 = 0.4(3 - 5x)
1.5x - 0.7 = 1.2 - 2x
1.5x + 2x = 1.2 + 0.7
3.5x= 1.9
x = 1.9/3.5
x = 0.5428
Respueta.
x = 0,5428 aproximadamente
1.5x -0.7 = 0.4(-5x + 3)
1.5x - 0.7 = -0.4 × 5x + 1.2
1.5x - 0.7 = -2x + 1.2
1.5x = -2x + 1.9
3.5x = 1.9
x = 1.9 / 3.5
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