(50-х) / 7 + 195 = 200
(50-х) /7 = 200-195
(50-х) /7 = 5
50-х=5*7
50- х = 35
х= 15
(270 / у-2) *30 = 840
270/у - 2 = 28
270/у =30
у= 270/30
у= 9
(50-х) / 7 + 195 = 200
(50-х) /7 = 200-195
(50-х) /7 = 5
50-х=5*7
50- х = 35
х= 15
(270 / у-2) *30 = 840
270/у - 2 = 28
270/у =30
у= 270/30
у= 9
35:7=5
5+195=200
=
40*5=200
х=15