1400:y-29=41
1400:y =41+29
1400:y =70
y=1400:70
325+(90-n):17=330
(90-n):17=330-325
(90-n):17 =5
90-n= 5*17
90-n= 85
n=90-85
n=5
1400:y-29=41
1400:y =41+29
1400:y =70
y=1400:70
y=2090*В+50=23090*В=230-50
90*В=180
В=180:90
В=2
325+(90-n):17=330
(90-n):17=330-325
(90-n):17 =5
90-n= 5*17
90-n= 85
n=90-85
n=5