951-r−354r-354r−354=882
951-r+354=882
-r=882-951-354
-r=-423
r=423
549-425−b425-b425−b=488
549-425+b=488
b=488-549+425
b=364
951-r−354r-354r−354=882
951-r+354=882
-r=882-951-354
-r=-423
r=423
549-425−b425-b425−b=488
549-425+b=488
b=488-549+425
b=364