Question

4. Aflaţi x din proporţia:
a)x-1/2x+10=1/3
b) x+1/3x-1=1/2
DAU COROANA!!!!!!​

Answer 1

Răspuns:

2x+10=3(x-1)

2x+10=3x-3

-1x=-3-10

-1x=-13

x=13

3x-1=2(x+1)

3x-1=2x+2

x=2+1

x=3