х·60=900-420
х·60=480
х=480/60
х=8
а+160=900-652
а=900-652-160
а=88
у-65=56+345
у=56+345 +65
у=466
45+х=45+98+100
x = 100 + 98 + 45 – 45
x = 198
1000 – y = 60 + 35 + 85
– y = 85 + 35 + 60 – 1000
-y = -820
y = 820
х·60=900-420
х·60=480
х=480/60
х=8
а+160=900-652
а=900-652-160
а=88
у-65=56+345
у=56+345 +65
у=466
45+х=45+98+100
x = 100 + 98 + 45 – 45
x = 198
1000 – y = 60 + 35 + 85
– y = 85 + 35 + 60 – 1000
-y = -820
y = 820