7*(5115-с)=9156 |:7
5115-с=1308
-с=1308-5115
-с=-3807
с=3807
(х-63580):5=3107
х-63580/5=3107|*5
х-63580=15535
х=15535+63580
х=79115
(5289-а)+3563=7001
5289-а+3563=7001
8852-а=7001
-а=7001-8852
-а=-1851
а=1851
1) 7*(5115-c)=9156
5115-c=1308
-c=1308-5115
-c=-3807
c=3807
2) (x-63580):5=3107
X-63580:5=3107
X-63580=15535
X=15535+63580
X=79115
3) (5289-a)+3563=7001
5289-a+3563=7001
8852-a=7001
-a=7001-8852
-a=1851/:1
a=1851
7*(5115-с)=9156 |:7
5115-с=1308
-с=1308-5115
-с=-3807
с=3807
(х-63580):5=3107
х-63580/5=3107|*5
х-63580=15535
х=15535+63580
х=79115
(5289-а)+3563=7001
5289-а+3563=7001
8852-а=7001
-а=7001-8852
-а=-1851
а=1851
1) 7*(5115-c)=9156
5115-c=1308
5115-c=1308
-c=1308-5115
-c=-3807
c=3807
2) (x-63580):5=3107
X-63580:5=3107
X-63580=15535
X=15535+63580
X=79115
3) (5289-a)+3563=7001
5289-a+3563=7001
8852-a=7001
-a=7001-8852
-a=1851/:1
a=1851