(2000+x)=3564+972
(2000+x=4536
x=4536-2000
x=2536
(2000+2536)-972=3564
(7002-x)-160=5348
(7002-x)=5348+160
(7002-x)=5508
x=7002-5508
x=5494
(7002-5494)-160=5348
(2000+x)=3564+972
(2000+x=4536
x=4536-2000
x=2536
(2000+2536)-972=3564
(7002-x)-160=5348
(7002-x)=5348+160
(7002-x)=5508
x=7002-5508
x=5494
(7002-5494)-160=5348