Question

Sa se rezolve in R ecuatiile:

a) 3x+5=2
b) 5x+3(x+6)=7x+13

Answer 1

Răspuns:

a)3x+5=2/-5

3x=-3

x=-1

b)5x+3(x+6)=7x+13

5x+3x+18=7x+13

8x+18=7x+13

8x-7x=-18+13

x=-5