Question

1. Solutia ecuatiei 2x-7=5, este x= ?
2. Multimea solutiilor inecuatiei -2x+3>11=?

Answer 1

1.
2x-7=5
2x=5+7
2x=12
x=12:2
x=6

2.
-2x+3>11
-2x>11-3
-2x>8 :(-1)
2x>-8
x=(-8):2
x=-4

Answer 2

 1) 2x-7=5 
2x = 5+7
2x= 12 => x =6

2) -2x+3 >11 / -3
   -2x> 8 : (-2)
      x> -4 => x apartine multimii : -3, -2 , -1 , 1, 0, 1, 2..