5х-279=3116 496а-597=48 507 89а-3987=37 220

Question

5х-279=3116 496а-597=48 507 89а-3987=37 220

Answer 1

5X=279+3116
5X=3395
X=3395:5
X=679

496a=597+48507
496a=49104
a=49104:496
a=99

89a=37220+3987
89a=41207
a=41207:89
a=463