2 1 4 11 5-3 5-x=2 5

Question

2 1 4
11 5-3 5-x=2 5

Answer 1

11.5-3.5-х=2.5
-3.5х=2.5-11.5
-3.5-х=-9
х=-9-(-3.5)
-х=-5.5
х=5.5