8 · (х - 7) = 1080 (k + 11): 23 = 27 900 : (210 +х) =36
40 + х : 70 = 54
142 – (123 - х) + 14 =111. 67 – 36 : х = 55. 24 : (х +2) = 60 : 15. 17 + 6·(х - 5) =7 40 – 3 · (х + 2) = 10
2 · (х - 12) +19 = 19
63 : (2х - 1) = 21 : 3
248 : (41 – 2х) = 8
18 · (7х + 26) = 1854
336:(5х+1)=6
21· (5х+14)=2499