1.28+х*14=98 2. 15*(х-45)=0
28+14х=98
14х=98-28
14х=70
х=70:14
х=5
15(х-45)=0
15х-675=0
15х=675
х=645:15
х=45
28+14х=98 15(х-45)=0
14х=98-28 15х-675=0
14х=70 15х=675
х=70:14 х=645:15
х=5 х=45