Question

х+9+3=1,5•(х-3)
Решите уравнение

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Answer 1

Объяснение:

$x + 9 + 3 = 1.5 \times (x - 3) \\ x + 12 = 1.5(x - 3) \\ x + 12 = 1.5x - 4.5 \\ x + 12 - 1.5x = - 4.5 \\ - 0.5x + 12 = - 4.5 \\ - 0.5x = - 4.5 - 12 \\ - 0.5x = - 16.5 \\ x = - 16.5 \div ( - 0.5) \\ x = 33$