已知:□□=○○○○ ○=△△△△△4k8^6q-?2[2B,J7O6o4o
求:(1)□+○=5v,?(T8R9o;J.c个○4k8^6q-?2[2B,J7O6o4o
(2)□+□+○=2c6K;P*N/F3H*S'b.u*z个△ 5×5=254k8^6q-?2[2B,J7O6o4o
(3)□□-○○○=-B*a5j9a)R0X:Y:j个△4k8^6q-?2[2B,J7O6o4o