Question

DOAR UNU SI DOI DE LA FIECARE TEST PLS REPEDE DAU COROANA!!!!!!!​

Answer 1

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)