Кпримеру: 9*=45 9 *5 45 77532: =84 77532- =84 257* =3855 257*=3855

9*...=45
...=45:9=5
9*5=45

77532 : ...=84
...=77532:84=923
77532 :923=84

77532 - ...=84
...=77532 - 84=77448
77532 - 77448=84

257 *...=3855
...=3855:257=15
257*15=3855

257 + ...=3855
...=3855-257=3598
257+3598=3855