Testul 1
ex 1 a) 4x = -5-3
4x = -8
x = -2
b) 2x+x =9
3x = 9
x = 3
ex 2 a) 3x >8+1
3x > 9
x > 3 x apartine (3,infinit)
b) -2x </ 5-1
-2x </ 4
x >/ -2
x apartine [-2, infinit)
testul 2 ex1
a) 2x = 1+5
2x = 6
x = 3
b) 3x-6 = -6
3x= -6+6
3x = 0
x = 0
ex 2 a) 3x < -5-7
3x < -12
x < -4
x apartine (-infinit, -4)
b) -5x-5 </ 10
-5x </ 10+5
-5x </ 15
-x </ 3
x >/ -3
x apartine [-3, infinit)
