25(4+399)+399(75)=25(403)+399(75)= 10775+29925=4070074(2)-74(64)=148-4736=-4588(35)(2)+(65)(35)=(70)+(2275)=234545(37)-45(23)+14(55)=1665-1035+1540=217063(22)+37(39)+17(63)=1386+1443+1071=3900
25(4+399)+399(75)=25(403)+399(75)= 10775+29925=40700
74(2)-74(64)=148-4736=-4588
(35)(2)+(65)(35)=(70)+(2275)=2345
45(37)-45(23)+14(55)=1665-1035+1540=2170
63(22)+37(39)+17(63)=1386+1443+1071=3900