Question

ajutor am si eu nevoie de cineva care se pricepe

Answer 1

Răspuns:

o sa rezolv prima coloana din fiecare exercitiu deoarece se rezolva la fel

7) x+5=-4

x=-4-5=>x=-9

x-8=-2

x=-2+8=>x=6

-3=-1+x

-3+1=x=>x=-2

-9x=27=>x=27:(-9)=>x=-3

_____________

8) 2x+1=-7

2x=-7-1=>x=-8:2=>x=-4

3x+24=0=>x=-24:3=>x=-8

3+2x=-7

2x=-7-3=>x=-10:2=>x=-5

1-2x=-7

-2x=-7-1=>x=-8:-2=>x=4

____________

9)2x+5=x+6

2x-x=6-5

x=1

4x+9=3x+17

4x-3x=17-9

x=8

2x+9=7+x

2x-x=7-9

x=-2

3-2x=-x+6

-2x+x=6-3

-x=3=>x=-3

atentie la regula semnelor