Question

5-x=2(x-5a)+a+2 si 2 (3x-2a) +13=5(x+3)

Answer 1

Răspuns:

5-x=2(x-5a)+a+2

5-x=2x-10a+a+2

3=3x-9a

x-3a=1 ⇒ x=1+3a

2(3x-2a)+13=5(x+3)

6x-4a+13=5x+15

x-4a=2 ⇒ x=2+4a

1+3a=2+4a

a= -1

x=2-4= -2