(839+c)-239 при c = 37; 98

Question

(839+c)-239 при c = 37; 98

Answer 1

(839+37)-239=876-239=637
(839+98)-239=937-239=698

Comments

спс

Answer 2

(839+с)-239
1)с=37
(839+37)-239=(839-239)+37=600+37=637
2)с=98
(839+98)-239=(839-239)+98=600+98=698