Question

rezolvati in multimea numerelor intregi ecuatia 11-2x= 19

Answer 1

11-2x=19
11-2x=19 -11
-2x=8 :(-2)
x=-4=> S={-4}

Answer 2

11 - 2x = 19
- 2x = 19 - 11
- 2x = 8
x = - 8 / 2
x = - 4 ∈ Z ⇒ S = { - 4}