1) 5Х+3Х-4=8X-4
6m-14t+7m=13m-14t
19k+2k-k+3k=23k
18s+3f-4s+12f=14s+15f
10a+12b-6a+3b=4a+15b
7E-E-E-E=4E
1)5х+3х-4=8х-4
2)6m-14t+7m=13m-14t
3)19k=2k-k+3k=23k
4)18s+3f-4s+12f=14s+15f
5)10a+12b-6a+3b=4a+15b