Решить уравнение А) 14-y=19-11y b) 2x+9=13x c) 0,5a+11=4-3a d)1,2n+1=1-n...

Решите задачу:

$a) ~14-y=19-11y \\ ~~-y+11y=19-14 \\ ~~~10y=5 \\ ~~~y=0,5$

$b)~~ 2x+9=13x \\ ~~~~~2x-13x=-9 \\ ~~-11x=-9 \\~~~~x= \frac{9}{11}$

$c) ~0,5a+11=4-3a \\ ~~~~0,5a+3a=4-11 \\ ~~~~3,5a=-7 \\ ~~~~a=-2$

$d)~1,2n+1=1-n \\ ~~~~1,2n+n=1-1 \\ ~~~~2,2n=0 \\ ~~~~n=0$

$e)~2,6-0,2b=4,1-0,5b \\ ~-0,2b+0,5b=4,1-2,6 \\ ~~~~0,3b=1,5 \\ ~~~~b=5$

$\textup{f)}~(y+4)-(y-1)=6y \\ ~~~~y+4-y+1=6y \\ ~~~~5=6y \\ ~~~~6y=5 \\ ~~~~y= \frac{5}{6}$