Question

4)21х+24=34х+3.
5)(1,2х-4)+4,6=0,3(3+х). 6) 6)-0,3(х-9)-4,8=0,3(5-х) решить.

Answer 1

Пошаговое объяснение:

4)

$21x + 24 = 34x + 3 \\ 21x - 34x = 3 - 24 \\ - 13x = - 21 \\ x = \frac{21}{13} \\ x = 1 \frac{8}{13}$

5)

$(1.2x - 4) + 4.6 = 0.3(3 + x) \\ 1.2x - 4 + 4.6 = 0.9 + 0.3x \\ 1.2x - 0.3x = 0.9 - 4.6 + 4 \\ 0.9x = 0. 3 \\ x = \frac{0.3}{0.9} \\ x = \frac{1}{3}$

6)

$- 0.3(x - 9) - 4.8 = 0.3(5 - x) \\ - 0.3x + 2.7 - 4.8 = 1.5 - 0.3x \\ - 0.3x + 0.3x = 1.5 - 2.7 + 4.8 \\ 0 = 3.6 \\$

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