Question

Ecuatie de gradul intai
2x-5=-9 3x+4=-5 4×-1=-9​

Answer 1

Răspuns:

2x-5=-9

2x=-9+5

2x=-4

x=-4 supra 2

x=-2

3x+4=-5

3x=-5-4

3x=-9

x=-9 supra 3

x=-3

4x-1=-9

4x=-9+1

4x=-8

x=-8 supra 4

x=-2