975*(y-361)=14625 975y-351975=14625 975y=366600 y=977,6 (30142+z):876=49 30142+z=42924 z=12782 51815p-975)=1205 p-975=43 p=975+43 p=1018 18y-7y-10=12 11y=22 y=2