6 ( 3,5 - 1,5x ) = 13,5 - 1,5 ( 3 + 2x)
21 - 9x = 13, 5 - 4,5 + 21
- 6x = 30
x = 30 ÷ ( - 6 )
x = - 5
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6 ( 3,5 - 1,5x ) = 13,5 - 1,5 ( 3 + 2x)
21 - 9x = 13, 5 - 4,5 + 21
- 6x = 30
x = 30 ÷ ( - 6 )
x = - 5