R÷98-87=1917
R÷98=1917+87
R÷98=2004
R=2004×98
R=196392
196392÷98-87=1917
1917=1917
(20018-1986)÷a+16 при а=98
18032÷а+16=18032÷98+16=184+16=200
при а=49
18032÷а+16=18032÷49+16=368+16=384
R÷98-87=1917
R÷98=1917+87
R÷98=2004
R=2004×98
R=196392
196392÷98-87=1917
1917=1917
(20018-1986)÷a+16 при а=98
18032÷а+16=18032÷98+16=184+16=200
при а=49
18032÷а+16=18032÷49+16=368+16=384