Question

(X-1)÷2-(x+1)÷3=1

х-1/2-х+1/3=1

3(х-1)-2(х+1)=6

3х-3-2х-2=6

х-5=6

х=6+5

Ответ

х=11
Чому тут 3(х-1)-2(х+1)=6 в кінці 6

Answer 1

$\displaystyle\bf\\\frac{x-1}{2} -\frac{x+1}{3} =1\\\\\\\frac{x-1}{2} \cdot 6-\frac{x+1}{3} \cdot 6=1\cdot 6\\\\\\(x-1)\cdot 3-(x+1)\cdot 2=6\\\\3x-3-2x-2=6\\\\x-5=6\\\\x=6+5\\\\\boxed{x=11}$