Question

ex.19 a si b VA rog trebuie urgent​

Answer 1

Răspuns:

a) 4×(x+2)-9=-5

4×(x+2)=-5+9

4×(x+2)=4

x+2=4:4

x+2=1

x=-1

verificare:-1+2=1

b)2×(3x+4)-10=28

2×(3x+4)=28-10

2×(3x+4)=18

3x+4=18÷2

3x+4=9