Question

5(3х) -2•5(3х-1)-3•5(3х-2)=6

Answer 1

Ответ:

5(3х)-2•5(3х-1)-3•5(3х-2)=6

5•3х-10•(3х-1)-15•(3х-2)=6

15х-30х+10-45х+30=6

-60х+40=6

-60х=6-40

-60х=-34

х = 17/30

Answer 2

$5(3x) - 2 \times 5(3x - 1) - 3 \times 5(3x - 2) = 6 \\ 15x - 2 \times (15x - 5) - 3(15x - 10) = 6 \\ 15x - 30x + 10 - 45x + 30 = 6 \\ 15x - 30x - 45x = 6 - 10 - 30 \\ - 60x = - 34 \\ \boldsymbol{x = \frac{34}{60} = \frac{17}{30} }$