(50*у+160)-60=500
(50*у+160) = 500 + 60
50*у+160 = 560
50y = 560 - 160
50y = 400
y = 400/50
y = 8
ответ: 8.
50y+160-60=500
50y=-160+60+500
50y=400
y=400/50
y=8
Проверка:
(50*8+160)-60=500
400+160-60=500
500=500
(50*у+160)-60=500
(50*у+160) = 500 + 60
50*у+160 = 560
50y = 560 - 160
50y = 400
y = 400/50
y = 8
ответ: 8.
(50*у+160)-60=500
50y+160-60=500
50y=-160+60+500
50y=400
y=400/50
y=8
Проверка:
(50*8+160)-60=500
400+160-60=500
500=500